231963512 has 16 divisors (see below), whose sum is σ = 474471000. Its totient is φ = 105437920.

The previous prime is 231963509. The next prime is 231963517. The reversal of 231963512 is 215369132.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231963517) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1317887 + ... + 1318062.

Almost surely, 2^231963512 is an apocalyptic number.

231963512 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

231963512 is an abundant number, since it is smaller than the sum of its proper divisors (242507488).

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

231963512 is a wasteful number, since it uses less digits than its factorization.

231963512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2635966 (or 2635962 counting only the distinct ones).

The product of its digits is 9720, while the sum is 32.

The square root of 231963512 is about 15230.3483873482. The cubic root of 231963512 is about 614.4311500297.

The spelling of 231963512 in words is "two hundred thirty-one million, nine hundred sixty-three thousand, five hundred twelve".