32131188658691 has 2 divisors, whose sum is σ = 32131188658692. Its totient is φ = 32131188658690.

The previous prime is 32131188658687. The next prime is 32131188658721. The reversal of 32131188658691 is 19685688113123.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 32131188658691 - 2² = 32131188658687 is a prime.

It is not a weakly prime, because it can be changed into another prime (32131188658601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16065594329345 + 16065594329346.

It is an arithmetic number, because the mean of its divisors is an integer number (16065594329346).

Almost surely, 2^{32131188658691} is an apocalyptic number.

32131188658691 is a deficient number, since it is larger than the sum of its proper divisors (1).

32131188658691 is an equidigital number, since it uses as much as digits as its factorization.

32131188658691 is an evil number, because the sum of its binary digits is even.

The product of its digits is 14929920, while the sum is 62.

The spelling of 32131188658691 in words is "thirty-two trillion, one hundred thirty-one billion, one hundred eighty-eight million, six hundred fifty-eight thousand, six hundred ninety-one".