231493100 has 18 divisors (see below), whose sum is σ = 502340244. Its totient is φ = 92597200.

The previous prime is 231493079. The next prime is 231493103. The reversal of 231493100 is 1394132.

It is a super-2 number, since 2×231493100² = 107178110695220000, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (231493103) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1157366 + ... + 1157565.

Almost surely, 2^231493100 is an apocalyptic number.

231493100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

231493100 is an abundant number, since it is smaller than the sum of its proper divisors (270847144).

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

231493100 is a wasteful number, since it uses less digits than its factorization.

231493100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2314945 (or 2314938 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 231493100 is about 15214.8973049443. The cubic root of 231493100 is about 614.0155223187.

The spelling of 231493100 in words is "two hundred thirty-one million, four hundred ninety-three thousand, one hundred".