231842279 has 2 divisors, whose sum is σ = 231842280. Its totient is φ = 231842278.

The previous prime is 231842263. The next prime is 231842287. The reversal of 231842279 is 972248132.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 231842279 - 2⁴ = 231842263 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (231812279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115921139 + 115921140.

It is an arithmetic number, because the mean of its divisors is an integer number (115921140).

Almost surely, 2^231842279 is an apocalyptic number.

231842279 is a deficient number, since it is larger than the sum of its proper divisors (1).

231842279 is an equidigital number, since it uses as much as digits as its factorization.

231842279 is an evil number, because the sum of its binary digits is even.

The product of its digits is 48384, while the sum is 38.

The square root of 231842279 is about 15226.3678860062. The cubic root of 231842279 is about 614.3240896395.

The spelling of 231842279 in words is "two hundred thirty-one million, eight hundred forty-two thousand, two hundred seventy-nine".