231672792991 has 2 divisors, whose sum is σ = 231672792992. Its totient is φ = 231672792990.

The previous prime is 231672792961. The next prime is 231672792997. The reversal of 231672792991 is 199297276132.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 231672792991 - 2⁹ = 231672792479 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (231672792997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115836396495 + 115836396496.

It is an arithmetic number, because the mean of its divisors is an integer number (115836396496).

Almost surely, 2^231672792991 is an apocalyptic number.

231672792991 is a deficient number, since it is larger than the sum of its proper divisors (1).

231672792991 is an equidigital number, since it uses as much as digits as its factorization.

231672792991 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5143824, while the sum is 58.

The spelling of 231672792991 in words is "two hundred thirty-one billion, six hundred seventy-two million, seven hundred ninety-two thousand, nine hundred ninety-one".