231244323399 has 12 divisors (see below), whose sum is σ = 334027073016. Its totient is φ = 154159423152.

The previous prime is 231244323379. The next prime is 231244323419. The reversal of 231244323399 is 993323442132.

231244323399 is a `hidden beast` number, since 2 + 3 + 124 + 432 + 3 + 3 + 99 = 666.

It is an interprime number because it is at equal distance from previous prime (231244323379) and next prime (231244323419).

It is not a de Polignac number, because 231244323399 - 2¹⁵ = 231244290631 is a prime.

It is a super-2 number, since 2×231244323399² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231244323319) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 174172 + ... + 702014.

It is an arithmetic number, because the mean of its divisors is an integer number (27835589418).

Almost surely, 2^231244323399 is an apocalyptic number.

231244323399 is a deficient number, since it is larger than the sum of its proper divisors (102782749617).

231244323399 is a wasteful number, since it uses less digits than its factorization.

231244323399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 576526 (or 576523 counting only the distinct ones).

The product of its digits is 839808, while the sum is 45.

The spelling of 231244323399 in words is "two hundred thirty-one billion, two hundred forty-four million, three hundred twenty-three thousand, three hundred ninety-nine".