231152826991 has 2 divisors, whose sum is σ = 231152826992. Its totient is φ = 231152826990.

The previous prime is 231152826943. The next prime is 231152827033. The reversal of 231152826991 is 199628251132.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 231152826991 - 2²⁹ = 230615956079 is a prime.

It is a super-2 number, since 2×231152826991² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (231152826901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115576413495 + 115576413496.

It is an arithmetic number, because the mean of its divisors is an integer number (115576413496).

Almost surely, 2^231152826991 is an apocalyptic number.

231152826991 is a deficient number, since it is larger than the sum of its proper divisors (1).

231152826991 is an equidigital number, since it uses as much as digits as its factorization.

231152826991 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 466560, while the sum is 49.

The spelling of 231152826991 in words is "two hundred thirty-one billion, one hundred fifty-two million, eight hundred twenty-six thousand, nine hundred ninety-one".