231632775197 has 2 divisors, whose sum is σ = 231632775198. Its totient is φ = 231632775196.

The previous prime is 231632775161. The next prime is 231632775251. The reversal of 231632775197 is 791577236132.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 223969348516 + 7663426681 = 473254^2 + 87541^2 .

It is a cyclic number.

It is not a de Polignac number, because 231632775197 - 2¹⁶ = 231632709661 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (231632775797) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115816387598 + 115816387599.

It is an arithmetic number, because the mean of its divisors is an integer number (115816387599).

Almost surely, 2^231632775197 is an apocalyptic number.

It is an amenable number.

231632775197 is a deficient number, since it is larger than the sum of its proper divisors (1).

231632775197 is an equidigital number, since it uses as much as digits as its factorization.

231632775197 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3333960, while the sum is 53.

The spelling of 231632775197 in words is "two hundred thirty-one billion, six hundred thirty-two million, seven hundred seventy-five thousand, one hundred ninety-seven".