231990976 has 112 divisors (see below), whose sum is σ = 565318656. Its totient is φ = 92196864.

The previous prime is 231990953. The next prime is 231991031. The reversal of 231990976 is 679099132.

It is a tau number, because it is divible by the number of its divisors (112).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 631945 + ... + 632311.

It is an arithmetic number, because the mean of its divisors is an integer number (5047488).

Almost surely, 2^231990976 is an apocalyptic number.

231990976 is the 7616-th decagonal number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 231990976, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (282659328).

231990976 is an abundant number, since it is smaller than the sum of its proper divisors (333327680).

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

231990976 is a wasteful number, since it uses less digits than its factorization.

231990976 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 486 (or 476 counting only the distinct ones).

The product of its (nonzero) digits is 183708, while the sum is 46.

The square root of 231990976 is about 15231.2499815347. The cubic root of 231990976 is about 614.4553981985.

The spelling of 231990976 in words is "two hundred thirty-one million, nine hundred ninety thousand, nine hundred seventy-six".