231879233 has 4 divisors (see below), whose sum is σ = 232704708. Its totient is φ = 231053760.

The previous prime is 231879229. The next prime is 231879251. The reversal of 231879233 is 332978132.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 207158449 + 24720784 = 14393^2 + 4972^2 .

It is a cyclic number.

It is not a de Polignac number, because 231879233 - 2² = 231879229 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231879223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 412316 + ... + 412877.

It is an arithmetic number, because the mean of its divisors is an integer number (58176177).

Almost surely, 2^231879233 is an apocalyptic number.

It is an amenable number.

231879233 is a deficient number, since it is larger than the sum of its proper divisors (825475).

231879233 is an equidigital number, since it uses as much as digits as its factorization.

231879233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 825474.

The product of its digits is 54432, while the sum is 38.

The square root of 231879233 is about 15227.5813246884. The cubic root of 231879233 is about 614.3567275265.

The spelling of 231879233 in words is "two hundred thirty-one million, eight hundred seventy-nine thousand, two hundred thirty-three".