231212000 has 48 divisors (see below), whose sum is σ = 568097712. Its totient is φ = 92483200.

The previous prime is 231211961. The next prime is 231212057. The reversal of 231212000 is 212132.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 24902 + ... + 32901.

It is an arithmetic number, because the mean of its divisors is an integer number (11835369).

Almost surely, 2^231212000 is an apocalyptic number.

231212000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

231212000 is an abundant number, since it is smaller than the sum of its proper divisors (336885712).

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

231212000 is an equidigital number, since it uses as much as digits as its factorization.

231212000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57828 (or 57810 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 231212000 is about 15205.6568421098. The cubic root of 231212000 is about 613.7668904695.

Adding to 231212000 its reverse (212132), we get a palindrome (231424132).

The spelling of 231212000 in words is "two hundred thirty-one million, two hundred twelve thousand".