231399480 has 256 divisors, whose sum is σ = 812044800. Its totient is φ = 52254720.

The previous prime is 231399457. The next prime is 231399541. The reversal of 231399480 is 84993132.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1096575 + ... + 1096785.

It is an arithmetic number, because the mean of its divisors is an integer number (3172050).

Almost surely, 2^231399480 is an apocalyptic number.

231399480 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 231399480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (406022400).

231399480 is an abundant number, since it is smaller than the sum of its proper divisors (580645320).

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

231399480 is a wasteful number, since it uses less digits than its factorization.

231399480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 294 (or 290 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 39.

The square root of 231399480 is about 15211.8204038833. The cubic root of 231399480 is about 613.9327381606.

The spelling of 231399480 in words is "two hundred thirty-one million, three hundred ninety-nine thousand, four hundred eighty".