13231020309 has 24 divisors (see below), whose sum is σ = 19146221280. Its totient is φ = 8123648832.

The previous prime is 13231020277. The next prime is 13231020311. The reversal of 13231020309 is 90302013231.

It is not a de Polignac number, because 13231020309 - 2⁵ = 13231020277 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13231060309) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 195147 + ... + 254055.

It is an arithmetic number, because the mean of its divisors is an integer number (797759220).

Almost surely, 2^13231020309 is an apocalyptic number.

It is an amenable number.

13231020309 is a deficient number, since it is larger than the sum of its proper divisors (5915200971).

13231020309 is a wasteful number, since it uses less digits than its factorization.

13231020309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59381 (or 59368 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 24.

The spelling of 13231020309 in words is "thirteen billion, two hundred thirty-one million, twenty thousand, three hundred nine".