231136260 has 24 divisors (see below), whose sum is σ = 647181696. Its totient is φ = 61636320.

The previous prime is 231136237. The next prime is 231136261. The reversal of 231136260 is 62631132.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 231136260.

It is not an unprimeable number, because it can be changed into a prime (231136261) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 1926076 + ... + 1926195.

It is an arithmetic number, because the mean of its divisors is an integer number (26965904).

Almost surely, 2^231136260 is an apocalyptic number.

231136260 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

231136260 is an abundant number, since it is smaller than the sum of its proper divisors (416045436).

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

231136260 is a wasteful number, since it uses less digits than its factorization.

231136260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3852283 (or 3852281 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 24.

The square root of 231136260 is about 15203.1661176217. The cubic root of 231136260 is about 613.6998642753.

Adding to 231136260 its reverse (62631132), we get a palindrome (293767392).

The spelling of 231136260 in words is "two hundred thirty-one million, one hundred thirty-six thousand, two hundred sixty".