231879251 has 2 divisors, whose sum is σ = 231879252. Its totient is φ = 231879250.

The previous prime is 231879229. The next prime is 231879283. The reversal of 231879251 is 152978132.

231879251 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-231879251 is a prime.

It is not a weakly prime, because it can be changed into another prime (231879451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115939625 + 115939626.

It is an arithmetic number, because the mean of its divisors is an integer number (115939626).

Almost surely, 2^231879251 is an apocalyptic number.

231879251 is a deficient number, since it is larger than the sum of its proper divisors (1).

231879251 is an equidigital number, since it uses as much as digits as its factorization.

231879251 is an evil number, because the sum of its binary digits is even.

The product of its digits is 30240, while the sum is 38.

The square root of 231879251 is about 15227.5819157212. The cubic root of 231879251 is about 614.3567434233.

The spelling of 231879251 in words is "two hundred thirty-one million, eight hundred seventy-nine thousand, two hundred fifty-one".