231990270 has 32 divisors (see below), whose sum is σ = 558806688. Its totient is φ = 61638528.

The previous prime is 231990251. The next prime is 231990271. The reversal of 231990270 is 72099132.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231990271) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5649 + ... + 22268.

It is an arithmetic number, because the mean of its divisors is an integer number (17462709).

Almost surely, 2^231990270 is an apocalyptic number.

231990270 is an abundant number, since it is smaller than the sum of its proper divisors (326816418).

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

231990270 is a wasteful number, since it uses less digits than its factorization.

231990270 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28204.

The product of its (nonzero) digits is 6804, while the sum is 33.

The square root of 231990270 is about 15231.2268054809. The cubic root of 231990270 is about 614.4547748899.

The spelling of 231990270 in words is "two hundred thirty-one million, nine hundred ninety thousand, two hundred seventy".