231000231320 has 16 divisors (see below), whose sum is σ = 519750520560. Its totient is φ = 92400092512.

The previous prime is 231000231307. The next prime is 231000231331. The reversal of 231000231320 is 23132000132.

It is a super-2 number, since 2×231000231320² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2887502852 + ... + 2887502931.

It is an arithmetic number, because the mean of its divisors is an integer number (32484407535).

Almost surely, 2^231000231320 is an apocalyptic number.

231000231320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

231000231320 is an abundant number, since it is smaller than the sum of its proper divisors (288750289240).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

231000231320 is a wasteful number, since it uses less digits than its factorization.

231000231320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5775005794 (or 5775005790 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 17.

Adding to 231000231320 its reverse (23132000132), we get a palindrome (254132231452).

The spelling of 231000231320 in words is "two hundred thirty-one billion, two hundred thirty-one thousand, three hundred twenty".