231892879 has 2 divisors, whose sum is σ = 231892880. Its totient is φ = 231892878.

The previous prime is 231892873. The next prime is 231892883. The reversal of 231892879 is 978298132.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 231892879 - 2¹³ = 231884687 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (231892873) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115946439 + 115946440.

It is an arithmetic number, because the mean of its divisors is an integer number (115946440).

Almost surely, 2^231892879 is an apocalyptic number.

231892879 is a deficient number, since it is larger than the sum of its proper divisors (1).

231892879 is an equidigital number, since it uses as much as digits as its factorization.

231892879 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 435456, while the sum is 49.

The square root of 231892879 is about 15228.0293866278. The cubic root of 231892879 is about 614.3687788392.

The spelling of 231892879 in words is "two hundred thirty-one million, eight hundred ninety-two thousand, eight hundred seventy-nine".