231648968 has 8 divisors (see below), whose sum is σ = 434341830. Its totient is φ = 115824480.

The previous prime is 231648961. The next prime is 231648979. The reversal of 231648968 is 869846132.

It can be written as a sum of positive squares in only one way, i.e., 195384484 + 36264484 = 13978^2 + 6022^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×231648968² = 107322488750930048, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (231648961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14478053 + ... + 14478068.

Almost surely, 2^231648968 is an apocalyptic number.

It is an amenable number.

231648968 is a deficient number, since it is larger than the sum of its proper divisors (202692862).

231648968 is a wasteful number, since it uses less digits than its factorization.

231648968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28956127 (or 28956123 counting only the distinct ones).

The product of its digits is 497664, while the sum is 47.

The square root of 231648968 is about 15220.0186596469. The cubic root of 231648968 is about 614.1533002186.

It can be divided in two parts, 2 and 31648968, that multiplied together give a square (63297936 = 7956²).

The spelling of 231648968 in words is "two hundred thirty-one million, six hundred forty-eight thousand, nine hundred sixty-eight".