231320235 has 32 divisors (see below), whose sum is σ = 378100800. Its totient is φ = 120729600.

The previous prime is 231320227. The next prime is 231320251. The reversal of 231320235 is 532023132.

It is not a de Polignac number, because 231320235 - 2³ = 231320227 is a prime.

It is a super-2 number, since 2×231320235² = 107018102240910450, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 219991 + ... + 221039.

It is an arithmetic number, because the mean of its divisors is an integer number (11815650).

Almost surely, 2^231320235 is an apocalyptic number.

231320235 is a deficient number, since it is larger than the sum of its proper divisors (146780565).

231320235 is a wasteful number, since it uses less digits than its factorization.

231320235 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1359.

The product of its (nonzero) digits is 1080, while the sum is 21.

The square root of 231320235 is about 15209.2154630014. The cubic root of 231320235 is about 613.8626477488.

Adding to 231320235 its reverse (532023132), we get a palindrome (763343367).

The spelling of 231320235 in words is "two hundred thirty-one million, three hundred twenty thousand, two hundred thirty-five".