13039212731 has 2 divisors, whose sum is σ = 13039212732. Its totient is φ = 13039212730.

The previous prime is 13039212701. The next prime is 13039212733. The reversal of 13039212731 is 13721293031.

It is a strong prime.

It is an emirp because it is prime and its reverse (13721293031) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13039212731 - 2²⁶ = 12972103867 is a prime.

It is a super-2 number, since 2×13039212731² (a number of 21 digits) contains 22 as substring.

Together with 13039212733, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (13039212733) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6519606365 + 6519606366.

It is an arithmetic number, because the mean of its divisors is an integer number (6519606366).

Almost surely, 2^13039212731 is an apocalyptic number.

13039212731 is a deficient number, since it is larger than the sum of its proper divisors (1).

13039212731 is an equidigital number, since it uses as much as digits as its factorization.

13039212731 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6804, while the sum is 32.

The spelling of 13039212731 in words is "thirteen billion, thirty-nine million, two hundred twelve thousand, seven hundred thirty-one".