231632775797 has 2 divisors, whose sum is σ = 231632775798. Its totient is φ = 231632775796.

The previous prime is 231632775793. The next prime is 231632775799. The reversal of 231632775797 is 797577236132.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 172132882321 + 59499893476 = 414889^2 + 243926^2 .

It is a cyclic number.

It is not a de Polignac number, because 231632775797 - 2² = 231632775793 is a prime.

Together with 231632775799, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (231632775793) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115816387898 + 115816387899.

It is an arithmetic number, because the mean of its divisors is an integer number (115816387899).

Almost surely, 2^231632775797 is an apocalyptic number.

It is an amenable number.

231632775797 is a deficient number, since it is larger than the sum of its proper divisors (1).

231632775797 is an equidigital number, since it uses as much as digits as its factorization.

231632775797 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 23337720, while the sum is 59.

The spelling of 231632775797 in words is "two hundred thirty-one billion, six hundred thirty-two million, seven hundred seventy-five thousand, seven hundred ninety-seven".