231252100 has 18 divisors (see below), whose sum is σ = 501817274. Its totient is φ = 92500800.

The previous prime is 231252067. The next prime is 231252113. The reversal of 231252100 is 1252132.

It can be written as a sum of positive squares in 3 ways, for example, as 2214144 + 229037956 = 1488^2 + 15134^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1156161 + ... + 1156360.

Almost surely, 2^231252100 is an apocalyptic number.

231252100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

231252100 is an abundant number, since it is smaller than the sum of its proper divisors (270565174).

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

231252100 is a wasteful number, since it uses less digits than its factorization.

231252100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2312535 (or 2312528 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 231252100 is about 15206.9753731635. The cubic root of 231252100 is about 613.8023710812.

The spelling of 231252100 in words is "two hundred thirty-one million, two hundred fifty-two thousand, one hundred".