231059947 has 2 divisors, whose sum is σ = 231059948. Its totient is φ = 231059946.

The previous prime is 231059923. The next prime is 231059963. The reversal of 231059947 is 749950132.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 231059947 - 2²⁷ = 96842219 is a prime.

It is not a weakly prime, because it can be changed into another prime (231059977) 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, 115529973 + 115529974.

It is an arithmetic number, because the mean of its divisors is an integer number (115529974).

Almost surely, 2^231059947 is an apocalyptic number.

231059947 is a deficient number, since it is larger than the sum of its proper divisors (1).

231059947 is an equidigital number, since it uses as much as digits as its factorization.

231059947 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 68040, while the sum is 40.

The square root of 231059947 is about 15200.6561371541. The cubic root of 231059947 is about 613.6323161936.

The spelling of 231059947 in words is "two hundred thirty-one million, fifty-nine thousand, nine hundred forty-seven".