231996355600 has 45 divisors (see below), whose sum is σ = 557394389053. Its totient is φ = 92794688960.

The previous prime is 231996355559. The next prime is 231996355609. The reversal of 231996355600 is 6553699132.

The square root of 231996355600 is 481660.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 83518688016 + 148477667584 = 288996^2 + 385328^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231996355609) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 9621159 + ... + 9645241.

Almost surely, 2^231996355600 is an apocalyptic number.

231996355600 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

231996355600 is the 481660-th square number.

It is an amenable number.

231996355600 is an abundant number, since it is smaller than the sum of its proper divisors (325398033453).

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

231996355600 is an frugal number, since it uses more digits than its factorization.

231996355600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48184 (or 24090 counting only the distinct ones).

The product of its (nonzero) digits is 1312200, while the sum is 49.

Multiplying 231996355600 by its sum of digits (49), we get a square (11367821424400 = 3371620²).

The spelling of 231996355600 in words is "two hundred thirty-one billion, nine hundred ninety-six million, three hundred fifty-five thousand, six hundred".