13231520715 has 96 divisors (see below), whose sum is σ = 25650984960. Its totient is φ = 5800032000.

The previous prime is 13231520693. The next prime is 13231520741. The reversal of 13231520715 is 51702513231.

It is not a de Polignac number, because 13231520715 - 2⁵ = 13231520683 is a prime.

It is a super-2 number, since 2×13231520715² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 3216510 + ... + 3220620.

It is an arithmetic number, because the mean of its divisors is an integer number (267197760).

Almost surely, 2^13231520715 is an apocalyptic number.

13231520715 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

13231520715 is a deficient number, since it is larger than the sum of its proper divisors (12419464245).

13231520715 is a wasteful number, since it uses less digits than its factorization.

13231520715 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4313 (or 4306 counting only the distinct ones).

The product of its (nonzero) digits is 6300, while the sum is 30.

The spelling of 13231520715 in words is "thirteen billion, two hundred thirty-one million, five hundred twenty thousand, seven hundred fifteen".