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13121011302030 = 2325178981491903
BaseRepresentation
bin1011111011101111100100…
…1101111011111010001110
31201110100121211121121100200
42332323321031323322032
53204433312343131110
643523413120434330
72522650614606252
oct276737115737216
951410554547320
1013121011302030
1141a96538a8015
12157ab341789a6
137423c9539048
143350bb7bc262
1517b4933026c0
hexbeef937be8e

13121011302030 has 48 divisors (see below), whose sum is σ = 34133698909440. Its totient is φ = 3496980498624.

The previous prime is 13121011302011. The next prime is 13121011302031. The reversal of 13121011302030 is 3020311012131.

13121011302030 is a `hidden beast` number, since 1 + 312 + 10 + 11 + 302 + 0 + 30 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 13121011301994 and 13121011302012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13121011302031) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 40584942 + ... + 40906961.

It is an arithmetic number, because the mean of its divisors is an integer number (711118727280).

Almost surely, 213121011302030 is an apocalyptic number.

13121011302030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13121011302030 is an abundant number, since it is smaller than the sum of its proper divisors (21012687607410).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13121011302030 is a wasteful number, since it uses less digits than its factorization.

13121011302030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81493705 (or 81493702 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 13121011302030 its reverse (3020311012131), we get a palindrome (16141322314161).

The spelling of 13121011302030 in words is "thirteen trillion, one hundred twenty-one billion, eleven million, three hundred two thousand, thirty".

Divisors: 1 2 3 5 6 9 10 15 18 30 45 90 1789 3578 5367 8945 10734 16101 17890 26835 32202 53670 80505 161010 81491903 162983806 244475709 407459515 488951418 733427127 814919030 1222378545 1466854254 2444757090 3667135635 7334271270 145789014467 291578028934 437367043401 728945072335 874734086802 1312101130203 1457890144670 2186835217005 2624202260406 4373670434010 6560505651015 13121011302030