231621792200 has 36 divisors (see below), whose sum is σ = 538536491745. Its totient is φ = 92645994400.

The previous prime is 231621792137. The next prime is 231621792301. The reversal of 231621792200 is 2297126132.

It is a happy number.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 2 ways, for example, as 226989356356 + 4632435844 = 476434^2 + 68062^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=340310.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 6789185 + ... + 6823215.

Almost surely, 2^231621792200 is an apocalyptic number.

231621792200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

231621792200 is an abundant number, since it is smaller than the sum of its proper divisors (306914699545).

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

231621792200 is an frugal number, since it uses more digits than its factorization.

231621792200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68078 (or 34038 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 35.

The spelling of 231621792200 in words is "two hundred thirty-one billion, six hundred twenty-one million, seven hundred ninety-two thousand, two hundred".