231323971 has 2 divisors, whose sum is σ = 231323972. Its totient is φ = 231323970.

The previous prime is 231323941. The next prime is 231324013. The reversal of 231323971 is 179323132.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 231323971 - 2⁷ = 231323843 is a prime.

It is not a weakly prime, because it can be changed into another prime (231323941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115661985 + 115661986.

It is an arithmetic number, because the mean of its divisors is an integer number (115661986).

Almost surely, 2^231323971 is an apocalyptic number.

231323971 is a deficient number, since it is larger than the sum of its proper divisors (1).

231323971 is an equidigital number, since it uses as much as digits as its factorization.

231323971 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6804, while the sum is 31.

The square root of 231323971 is about 15209.3382827788. The cubic root of 231323971 is about 613.8659525159.

The spelling of 231323971 in words is "two hundred thirty-one million, three hundred twenty-three thousand, nine hundred seventy-one".