231565348 has 24 divisors (see below), whose sum is σ = 479102400. Its totient is φ = 95819808.

The previous prime is 231565337. The next prime is 231565349. The reversal of 231565348 is 843565132.

It is a super-2 number, since 2×231565348² = 107245020788722208, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (231565349) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 141778 + ... + 143401.

It is an arithmetic number, because the mean of its divisors is an integer number (19962600).

Almost surely, 2^231565348 is an apocalyptic number.

231565348 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

231565348 is an abundant number, since it is smaller than the sum of its proper divisors (247537052).

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

231565348 is a wasteful number, since it uses less digits than its factorization.

231565348 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 285219 (or 285217 counting only the distinct ones).

The product of its digits is 86400, while the sum is 37.

The square root of 231565348 is about 15217.2713717013. The cubic root of 231565348 is about 614.0793928750.

The spelling of 231565348 in words is "two hundred thirty-one million, five hundred sixty-five thousand, three hundred forty-eight".