231130203400 has 48 divisors (see below), whose sum is σ = 538574764500. Its totient is φ = 92246138880.

The previous prime is 231130203397. The next prime is 231130203419. The reversal of 231130203400 is 4302031132.

It can be written as a sum of positive squares in 6 ways, for example, as 96113640484 + 135016562916 = 310022^2 + 367446^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1197117 + ... + 1376716.

Almost surely, 2^231130203400 is an apocalyptic number.

231130203400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

231130203400 is an abundant number, since it is smaller than the sum of its proper divisors (307444561100).

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

231130203400 is a wasteful number, since it uses less digits than its factorization.

231130203400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2574298 (or 2574289 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 231130203400 its reverse (4302031132), we get a palindrome (235432234532).

The spelling of 231130203400 in words is "two hundred thirty-one billion, one hundred thirty million, two hundred three thousand, four hundred".