231344660 has 24 divisors (see below), whose sum is σ = 488011776. Its totient is φ = 92121120.

The previous prime is 231344657. The next prime is 231344693. The reversal of 231344660 is 66443132.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21476 + ... + 30395.

It is an arithmetic number, because the mean of its divisors is an integer number (20333824).

Almost surely, 2^231344660 is an apocalyptic number.

231344660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

231344660 is an abundant number, since it is smaller than the sum of its proper divisors (256667116).

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

231344660 is a wasteful number, since it uses less digits than its factorization.

231344660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52103 (or 52101 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 29.

The square root of 231344660 is about 15210.0184089303. The cubic root of 231344660 is about 613.8842528157.

Adding to 231344660 its reverse (66443132), we get a palindrome (297787792).

The spelling of 231344660 in words is "two hundred thirty-one million, three hundred forty-four thousand, six hundred sixty".