231359971 has 2 divisors, whose sum is σ = 231359972. Its totient is φ = 231359970.

The previous prime is 231359969. The next prime is 231360029. The reversal of 231359971 is 179953132.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 231359971 - 2¹ = 231359969 is a prime.

It is a super-2 number, since 2×231359971² = 107054872362241682, which contains 22 as substring.

Together with 231359969, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (231359771) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115679985 + 115679986.

It is an arithmetic number, because the mean of its divisors is an integer number (115679986).

Almost surely, 2^231359971 is an apocalyptic number.

231359971 is a deficient number, since it is larger than the sum of its proper divisors (1).

231359971 is an equidigital number, since it uses as much as digits as its factorization.

231359971 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 51030, while the sum is 40.

The square root of 231359971 is about 15210.5217201778. The cubic root of 231359971 is about 613.8977953435.

The spelling of 231359971 in words is "two hundred thirty-one million, three hundred fifty-nine thousand, nine hundred seventy-one".