231916560 has 40 divisors (see below), whose sum is σ = 718942080. Its totient is φ = 61844352.

The previous prime is 231916537. The next prime is 231916583. The reversal of 231916560 is 65619132.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (231916537) and next prime (231916583).

It is a tau number, because it is divible by the number of its divisors (40).

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, 482920 + ... + 483399.

It is an arithmetic number, because the mean of its divisors is an integer number (17973552).

Almost surely, 2^231916560 is an apocalyptic number.

231916560 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

231916560 is an abundant number, since it is smaller than the sum of its proper divisors (487025520).

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

231916560 is a wasteful number, since it uses less digits than its factorization.

231916560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 966335 (or 966329 counting only the distinct ones).

The product of its (nonzero) digits is 9720, while the sum is 33.

The square root of 231916560 is about 15228.8069132155. The cubic root of 231916560 is about 614.3896913282.

The spelling of 231916560 in words is "two hundred thirty-one million, nine hundred sixteen thousand, five hundred sixty".