231131241400 has 24 divisors (see below), whose sum is σ = 537380136720. Its totient is φ = 92452496480.

The previous prime is 231131241379. The next prime is 231131241427. The reversal of 231131241400 is 4142131132.

It is a super-2 number, since 2×231131241400² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 577827904 + ... + 577828303.

It is an arithmetic number, because the mean of its divisors is an integer number (22390839030).

Almost surely, 2^231131241400 is an apocalyptic number.

231131241400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

231131241400 is an abundant number, since it is smaller than the sum of its proper divisors (306248895320).

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

231131241400 is a wasteful number, since it uses less digits than its factorization.

231131241400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1155656223 (or 1155656214 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 231131241400 its reverse (4142131132), we get a palindrome (235273372532).

The spelling of 231131241400 in words is "two hundred thirty-one billion, one hundred thirty-one million, two hundred forty-one thousand, four hundred".