231369768 has 72 divisors (see below), whose sum is σ = 728943930. Its totient is φ = 66104640.

The previous prime is 231369737. The next prime is 231369781. The reversal of 231369768 is 867963132.

It can be written as a sum of positive squares in only one way, i.e., 229886244 + 1483524 = 15162^2 + 1218^2 .

It is a tau number, because it is divible by the number of its divisors (72).

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

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 17 ways as a sum of consecutive naturals, for example, 29263 + ... + 36318.

Almost surely, 2^231369768 is an apocalyptic number.

231369768 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

231369768 is an abundant number, since it is smaller than the sum of its proper divisors (497574162).

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

231369768 is a wasteful number, since it uses less digits than its factorization.

231369768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65607 (or 65593 counting only the distinct ones).

The product of its digits is 326592, while the sum is 45.

The square root of 231369768 is about 15210.8437635787. The cubic root of 231369768 is about 613.9064604434.

The spelling of 231369768 in words is "two hundred thirty-one million, three hundred sixty-nine thousand, seven hundred sixty-eight".