231494579 has 2 divisors, whose sum is σ = 231494580. Its totient is φ = 231494578.

The previous prime is 231494561. The next prime is 231494591. The reversal of 231494579 is 975494132.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-231494579 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (231494509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115747289 + 115747290.

It is an arithmetic number, because the mean of its divisors is an integer number (115747290).

Almost surely, 2^231494579 is an apocalyptic number.

231494579 is a deficient number, since it is larger than the sum of its proper divisors (1).

231494579 is an equidigital number, since it uses as much as digits as its factorization.

231494579 is an evil number, because the sum of its binary digits is even.

The product of its digits is 272160, while the sum is 44.

The square root of 231494579 is about 15214.9459085466. The cubic root of 231494579 is about 614.0168299560.

The spelling of 231494579 in words is "two hundred thirty-one million, four hundred ninety-four thousand, five hundred seventy-nine".