15011513131 has 4 divisors (see below), whose sum is σ = 15035843592. Its totient is φ = 14987182672.

The previous prime is 15011513117. The next prime is 15011513161. The reversal of 15011513131 is 13131511051.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 15011513131 - 2¹⁷ = 15011382059 is a prime.

It is a super-2 number, since 2×15011513131² (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 (15011513161) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12164305 + ... + 12165538.

It is an arithmetic number, because the mean of its divisors is an integer number (3758960898).

Almost surely, 2^15011513131 is an apocalyptic number.

15011513131 is a deficient number, since it is larger than the sum of its proper divisors (24330461).

15011513131 is an equidigital number, since it uses as much as digits as its factorization.

15011513131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24330460.

The product of its (nonzero) digits is 225, while the sum is 22.

The spelling of 15011513131 in words is "fifteen billion, eleven million, five hundred thirteen thousand, one hundred thirty-one".