231379984 has 20 divisors (see below), whose sum is σ = 489053520. Its totient is φ = 105172640.

The previous prime is 231379943. The next prime is 231379987. The reversal of 231379984 is 489973132.

It is a nialpdrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (231379987) 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 3 ways as a sum of consecutive naturals, for example, 657154 + ... + 657505.

It is an arithmetic number, because the mean of its divisors is an integer number (24452676).

Almost surely, 2^231379984 is an apocalyptic number.

It is an amenable number.

231379984 is an abundant number, since it is smaller than the sum of its proper divisors (257673536).

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

231379984 is a wasteful number, since it uses less digits than its factorization.

231379984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1314678 (or 1314672 counting only the distinct ones).

The product of its digits is 326592, while the sum is 46.

The square root of 231379984 is about 15211.1795729325. The cubic root of 231379984 is about 613.9154958735.

The spelling of 231379984 in words is "two hundred thirty-one million, three hundred seventy-nine thousand, nine hundred eighty-four".