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13000313131 = 135318868379
BaseRepresentation
bin11000001101110000…
…10000100100101011
31020120000101022222221
430012320100210223
5203111040010011
65550001454511
7640105560361
oct140670204453
936500338887
1013000313131
115571379743
122629941437
1312c24813a0
148b480b631
155114b4971
hex306e1092b

13000313131 has 8 divisors (see below), whose sum is σ = 14264495280. Its totient is φ = 11773867872.

The previous prime is 13000313101. The next prime is 13000313141. The reversal of 13000313131 is 13131300031.

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

It is not a de Polignac number, because 13000313131 - 27 = 13000313003 is a prime.

It is a super-2 number, since 2×130003131312 (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13000313101) 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, 9433501 + ... + 9434878.

It is an arithmetic number, because the mean of its divisors is an integer number (1783061910).

Almost surely, 213000313131 is an apocalyptic number.

13000313131 is a deficient number, since it is larger than the sum of its proper divisors (1264182149).

13000313131 is a wasteful number, since it uses less digits than its factorization.

13000313131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18868445.

The product of its (nonzero) digits is 81, while the sum is 16.

Adding to 13000313131 its reverse (13131300031), we get a palindrome (26131613162).

The spelling of 13000313131 in words is "thirteen billion, three hundred thirteen thousand, one hundred thirty-one".

Divisors: 1 13 53 689 18868379 245288927 1000024087 13000313131