231000100 has 36 divisors (see below), whose sum is σ = 527657200. Its totient is φ = 87536160.

The previous prime is 231000079. The next prime is 231000101. The reversal of 231000100 is 1000132.

It is a super-2 number, since 2×231000100² = 106722092400020000, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (231000101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 58890 + ... + 62689.

Almost surely, 2^231000100 is an apocalyptic number.

231000100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

231000100 is an abundant number, since it is smaller than the sum of its proper divisors (296657100).

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

231000100 is a wasteful number, since it uses less digits than its factorization.

231000100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121612 (or 121605 counting only the distinct ones).

The product of its (nonzero) digits is 6, while the sum is 7.

The square root of 231000100 is about 15198.6874433288. The cubic root of 231000100 is about 613.5793325058.

Adding to 231000100 its reverse (1000132), we get a palindrome (232000232).

The spelling of 231000100 in words is "two hundred thirty-one million, one hundred", and thus it is an aban number.