231013560 has 64 divisors (see below), whose sum is σ = 694241280. Its totient is φ = 61496960.

The previous prime is 231013553. The next prime is 231013567. The reversal of 231013560 is 65310132.

It is an interprime number because it is at equal distance from previous prime (231013553) and next prime (231013567).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231013567) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 87865 + ... + 90455.

It is an arithmetic number, because the mean of its divisors is an integer number (10847520).

Almost surely, 2^231013560 is an apocalyptic number.

231013560 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

231013560 is an abundant number, since it is smaller than the sum of its proper divisors (463227720).

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

231013560 is a wasteful number, since it uses less digits than its factorization.

231013560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3348 (or 3344 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 21.

The square root of 231013560 is about 15199.1302382735. The cubic root of 231013560 is about 613.5912496974.

Adding to 231013560 its reverse (65310132), we get a palindrome (296323692).

The spelling of 231013560 in words is "two hundred thirty-one million, thirteen thousand, five hundred sixty".