231370146 has 24 divisors (see below), whose sum is σ = 572916864. Its totient is φ = 66105720.

The previous prime is 231370141. The next prime is 231370157. The reversal of 231370146 is 641073132.

It is a super-2 number, since 2×231370146² = 107064288920122632, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (231370141) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 918010 + ... + 918261.

It is an arithmetic number, because the mean of its divisors is an integer number (23871536).

Almost surely, 2^231370146 is an apocalyptic number.

231370146 is an abundant number, since it is smaller than the sum of its proper divisors (341546718).

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

231370146 is a wasteful number, since it uses less digits than its factorization.

231370146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1836286 (or 1836283 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 27.

The square root of 231370146 is about 15210.8561889198. The cubic root of 231370146 is about 613.9067947661.

The spelling of 231370146 in words is "two hundred thirty-one million, three hundred seventy thousand, one hundred forty-six".