13031707697 has 4 divisors (see below), whose sum is σ = 13798278756. Its totient is φ = 12265136640.

The previous prime is 13031707693. The next prime is 13031707837. The reversal of 13031707697 is 79670713031.

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

It can be written as a sum of positive squares in 2 ways, for example, as 12002517136 + 1029190561 = 109556^2 + 32081^2 .

It is a cyclic number.

It is not a de Polignac number, because 13031707697 - 2² = 13031707693 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13031707691) 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, 383285504 + ... + 383285537.

It is an arithmetic number, because the mean of its divisors is an integer number (3449569689).

Almost surely, 2^13031707697 is an apocalyptic number.

13031707697 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

13031707697 is a deficient number, since it is larger than the sum of its proper divisors (766571059).

13031707697 is an equidigital number, since it uses as much as digits as its factorization.

13031707697 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 766571058.

The product of its (nonzero) digits is 166698, while the sum is 44.

The spelling of 13031707697 in words is "thirteen billion, thirty-one million, seven hundred seven thousand, six hundred ninety-seven".