231122971 has 2 divisors, whose sum is σ = 231122972. Its totient is φ = 231122970.

The previous prime is 231122951. The next prime is 231122977. The reversal of 231122971 is 179221132.

231122971 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 231122971 - 2⁹ = 231122459 is a prime.

It is not a weakly prime, because it can be changed into another prime (231122977) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115561485 + 115561486.

It is an arithmetic number, because the mean of its divisors is an integer number (115561486).

Almost surely, 2^231122971 is an apocalyptic number.

231122971 is a deficient number, since it is larger than the sum of its proper divisors (1).

231122971 is an equidigital number, since it uses as much as digits as its factorization.

231122971 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1512, while the sum is 28.

The square root of 231122971 is about 15202.7290642174. The cubic root of 231122971 is about 613.6881026507.

The spelling of 231122971 in words is "two hundred thirty-one million, one hundred twenty-two thousand, nine hundred seventy-one".