31312032993727 has 2 divisors, whose sum is σ = 31312032993728. Its totient is φ = 31312032993726.

The previous prime is 31312032993719. The next prime is 31312032993739. The reversal of 31312032993727 is 72739923021313.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (72739923021313) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 31312032993727 - 2³ = 31312032993719 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31312032993707) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15656016496863 + 15656016496864.

It is an arithmetic number, because the mean of its divisors is an integer number (15656016496864).

Almost surely, 2^{31312032993727} is an apocalyptic number.

31312032993727 is a deficient number, since it is larger than the sum of its proper divisors (1).

31312032993727 is an equidigital number, since it uses as much as digits as its factorization.

31312032993727 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2571912, while the sum is 52.

The spelling of 31312032993727 in words is "thirty-one trillion, three hundred twelve billion, thirty-two million, nine hundred ninety-three thousand, seven hundred twenty-seven".