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20102310323131 = 612239147184489
BaseRepresentation
bin1001001001000011011110…
…00100001110001110111011
32122011202120120101102102211
410210201233010032032323
510113324012420320011
6110430512431235551
74143225663305221
oct444415704161673
978152516342384
1020102310323131
1164503841250a3
122307b67078bb7
13b2a84164128a
144d6d58076b11
1524cd91d30b21
hex12486f10e3bb

20102310323131 has 8 divisors (see below), whose sum is σ = 20440981971200. Its totient is φ = 19763933048640.

The previous prime is 20102310323101. The next prime is 20102310323159. The reversal of 20102310323131 is 13132301320102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20102310323131 - 231 = 20100162839483 is a prime.

It is a super-2 number, since 2×201023103231312 (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20102310323101) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 73455666 + ... + 73728823.

It is an arithmetic number, because the mean of its divisors is an integer number (2555122746400).

Almost surely, 220102310323131 is an apocalyptic number.

20102310323131 is a deficient number, since it is larger than the sum of its proper divisors (338671648069).

20102310323131 is a wasteful number, since it uses less digits than its factorization.

20102310323131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147186789.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 20102310323131 its reverse (13132301320102), we get a palindrome (33234611643233).

The spelling of 20102310323131 in words is "twenty trillion, one hundred two billion, three hundred ten million, three hundred twenty-three thousand, one hundred thirty-one".

Divisors: 1 61 2239 136579 147184489 8978253829 329546070871 20102310323131