231240112400 has 60 divisors (see below), whose sum is σ = 606059324304. Its totient is φ = 84087312000.

The previous prime is 231240112349. The next prime is 231240112403. The reversal of 231240112400 is 4211042132.

231240112400 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (231240112403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 26272886 + ... + 26281685.

Almost surely, 2^231240112400 is an apocalyptic number.

231240112400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

231240112400 is an abundant number, since it is smaller than the sum of its proper divisors (374819211904).

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

231240112400 is a wasteful number, since it uses less digits than its factorization.

231240112400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52554600 (or 52554589 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 231240112400 its reverse (4211042132), we get a palindrome (235451154532).

The spelling of 231240112400 in words is "two hundred thirty-one billion, two hundred forty million, one hundred twelve thousand, four hundred".