231075612 has 48 divisors (see below), whose sum is σ = 618419200. Its totient is φ = 74539440.

The previous prime is 231075589. The next prime is 231075613. The reversal of 231075612 is 216570132.

It is a happy number.

It is a super-2 number, since 2×231075612² = 106791876922349088, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231075613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31162 + ... + 37857.

Almost surely, 2^231075612 is an apocalyptic number.

It is an amenable number.

231075612 is an abundant number, since it is smaller than the sum of its proper divisors (387343588).

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

231075612 is a wasteful number, since it uses less digits than its factorization.

231075612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69063 (or 69055 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 27.

The square root of 231075612 is about 15201.1714022308. The cubic root of 231075612 is about 613.6461832054.

The spelling of 231075612 in words is "two hundred thirty-one million, seventy-five thousand, six hundred twelve".