791017920031 has 2 divisors, whose sum is σ = 791017920032. Its totient is φ = 791017920030.

The previous prime is 791017919999. The next prime is 791017920037. The reversal of 791017920031 is 130029710197.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 791017920031 - 2⁵ = 791017919999 is a prime.

It is a super-2 number, since 2×791017920031² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (791017920037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 395508960015 + 395508960016.

It is an arithmetic number, because the mean of its divisors is an integer number (395508960016).

Almost surely, 2^791017920031 is an apocalyptic number.

791017920031 is a deficient number, since it is larger than the sum of its proper divisors (1).

791017920031 is an equidigital number, since it uses as much as digits as its factorization.

791017920031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23814, while the sum is 40.

The spelling of 791017920031 in words is "seven hundred ninety-one billion, seventeen million, nine hundred twenty thousand, thirty-one".