231540360 has 32 divisors (see below), whose sum is σ = 694621440. Its totient is φ = 61744064.

The previous prime is 231540343. The next prime is 231540371. The reversal of 231540360 is 63045132.

It is a happy number.

231540360 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×231540360² = 107221876617859200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 231540360.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 964632 + ... + 964871.

It is an arithmetic number, because the mean of its divisors is an integer number (21706920).

Almost surely, 2^231540360 is an apocalyptic number.

231540360 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

231540360 is an abundant number, since it is smaller than the sum of its proper divisors (463081080).

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

231540360 is a wasteful number, since it uses less digits than its factorization.

231540360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1929517 (or 1929513 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 24.

The square root of 231540360 is about 15216.4503087941. The cubic root of 231540360 is about 614.0573038363.

Adding to 231540360 its reverse (63045132), we get a palindrome (294585492).

The spelling of 231540360 in words is "two hundred thirty-one million, five hundred forty thousand, three hundred sixty".