231287064 has 32 divisors (see below), whose sum is σ = 598158000. Its totient is φ = 74436992.

The previous prime is 231287041. The next prime is 231287081. The reversal of 231287064 is 460782132.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 165459 + ... + 166850.

Almost surely, 2^231287064 is an apocalyptic number.

231287064 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

231287064 is an abundant number, since it is smaller than the sum of its proper divisors (366870936).

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

231287064 is a wasteful number, since it uses less digits than its factorization.

231287064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 332347 (or 332343 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 33.

The square root of 231287064 is about 15208.1249337320. The cubic root of 231287064 is about 613.8333039961.

The spelling of 231287064 in words is "two hundred thirty-one million, two hundred eighty-seven thousand, sixty-four".