239279231 has 2 divisors, whose sum is σ = 239279232. Its totient is φ = 239279230.

The previous prime is 239279221. The next prime is 239279251. The reversal of 239279231 is 132972932.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 239279231 - 2⁶ = 239279167 is a prime.

It is a super-2 number, since 2×239279231² = 114509100775902722, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (239279221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 119639615 + 119639616.

It is an arithmetic number, because the mean of its divisors is an integer number (119639616).

Almost surely, 2^239279231 is an apocalyptic number.

239279231 is a deficient number, since it is larger than the sum of its proper divisors (1).

239279231 is an equidigital number, since it uses as much as digits as its factorization.

239279231 is an evil number, because the sum of its binary digits is even.

The product of its digits is 40824, while the sum is 38.

The square root of 239279231 is about 15468.6531734343. The cubic root of 239279231 is about 620.8237671344.

The spelling of 239279231 in words is "two hundred thirty-nine million, two hundred seventy-nine thousand, two hundred thirty-one".