231313403400 has 96 divisors (see below), whose sum is σ = 721365704640. Its totient is φ = 61314184960.

The previous prime is 231313403371. The next prime is 231313403423. The reversal of 231313403400 is 4304313132.

It is a super-2 number, since 2×231313403400² (a number of 24 digits) contains 22 as substring.

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

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, 1054059 + ... + 1254458.

It is an arithmetic number, because the mean of its divisors is an integer number (7514226090).

Almost surely, 2^231313403400 is an apocalyptic number.

231313403400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

231313403400 is an abundant number, since it is smaller than the sum of its proper divisors (490052301240).

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

231313403400 is a wasteful number, since it uses less digits than its factorization.

231313403400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2308703 (or 2308694 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 24.

Adding to 231313403400 its reverse (4304313132), we get a palindrome (235617716532).

The spelling of 231313403400 in words is "two hundred thirty-one billion, three hundred thirteen million, four hundred three thousand, four hundred".