231973560 has 384 divisors, whose sum is σ = 950302080. Its totient is φ = 47775744.

The previous prime is 231973559. The next prime is 231973601. The reversal of 231973560 is 65379132.

231973560 is a `hidden beast` number, since 2 + 3 + 1 + 97 + 3 + 560 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 2391432 + ... + 2391528.

It is an arithmetic number, because the mean of its divisors is an integer number (2474745).

Almost surely, 2^231973560 is an apocalyptic number.

231973560 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 231973560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (475151040).

231973560 is an abundant number, since it is smaller than the sum of its proper divisors (718328520).

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

231973560 is a wasteful number, since it uses less digits than its factorization.

231973560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 207 (or 200 counting only the distinct ones).

The product of its (nonzero) digits is 34020, while the sum is 36.

The square root of 231973560 is about 15230.6782514765. The cubic root of 231973560 is about 614.4400217053.

The spelling of 231973560 in words is "two hundred thirty-one million, nine hundred seventy-three thousand, five hundred sixty".