231720480 has 96 divisors (see below), whose sum is σ = 811036800. Its totient is φ = 61790976.

The previous prime is 231720431. The next prime is 231720493. The reversal of 231720480 is 84027132.

231720480 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

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, 22500 + ... + 31139.

It is an arithmetic number, because the mean of its divisors is an integer number (8448300).

Almost surely, 2^231720480 is an apocalyptic number.

231720480 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

231720480 is an abundant number, since it is smaller than the sum of its proper divisors (579316320).

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

231720480 is a wasteful number, since it uses less digits than its factorization.

231720480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53663 (or 53649 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 231720480 is about 15222.3677527512. The cubic root of 231720480 is about 614.2164918263.

The spelling of 231720480 in words is "two hundred thirty-one million, seven hundred twenty thousand, four hundred eighty".