231023552400 has 180 divisors, whose sum is σ = 803354869200. Its totient is φ = 61480339200.

The previous prime is 231023552377. The next prime is 231023552437. The reversal of 231023552400 is 4255320132.

It is a happy number.

231023552400 is a `hidden beast` number, since 2 + 3 + 102 + 3 + 552 + 4 + 0 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (180).

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1702251 + ... + 1832949.

Almost surely, 2^231023552400 is an apocalyptic number.

231023552400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 231023552400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (401677434600).

231023552400 is an abundant number, since it is smaller than the sum of its proper divisors (572331316800).

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

231023552400 is a wasteful number, since it uses less digits than its factorization.

231023552400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131214 (or 131200 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

Adding to 231023552400 its reverse (4255320132), we get a palindrome (235278872532).

The spelling of 231023552400 in words is "two hundred thirty-one billion, twenty-three million, five hundred fifty-two thousand, four hundred".