31050320797 has 2 divisors, whose sum is σ = 31050320798. Its totient is φ = 31050320796.

The previous prime is 31050320789. The next prime is 31050320849. The reversal of 31050320797 is 79702305013.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28300996441 + 2749324356 = 168229^2 + 52434^2 .

It is a cyclic number.

It is not a de Polignac number, because 31050320797 - 2³ = 31050320789 is a prime.

It is a super-2 number, since 2×31050320797² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31050320747) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15525160398 + 15525160399.

It is an arithmetic number, because the mean of its divisors is an integer number (15525160399).

Almost surely, 2^31050320797 is an apocalyptic number.

It is an amenable number.

31050320797 is a deficient number, since it is larger than the sum of its proper divisors (1).

31050320797 is an equidigital number, since it uses as much as digits as its factorization.

31050320797 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 39690, while the sum is 37.

The spelling of 31050320797 in words is "thirty-one billion, fifty million, three hundred twenty thousand, seven hundred ninety-seven".