231243113400 has 96 divisors (see below), whose sum is σ = 771996266160. Its totient is φ = 56921379840.

The previous prime is 231243113393. The next prime is 231243113483. The reversal of 231243113400 is 4311342132.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14815477 + ... + 14831076.

Almost surely, 2^231243113400 is an apocalyptic number.

231243113400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

231243113400 is an abundant number, since it is smaller than the sum of its proper divisors (540753152760).

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

231243113400 is a wasteful number, since it uses less digits than its factorization.

231243113400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29646585 (or 29646576 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 231243113400 its reverse (4311342132), we get a palindrome (235554455532).

The spelling of 231243113400 in words is "two hundred thirty-one billion, two hundred forty-three million, one hundred thirteen thousand, four hundred".