31300320091 has 2 divisors, whose sum is σ = 31300320092. Its totient is φ = 31300320090.

The previous prime is 31300320067. The next prime is 31300320097. The reversal of 31300320091 is 19002300313.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 31300320091 - 2¹⁵ = 31300287323 is a prime.

It is a super-3 number, since 3×31300320091³ (a number of 32 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (31300320097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15650160045 + 15650160046.

It is an arithmetic number, because the mean of its divisors is an integer number (15650160046).

Almost surely, 2^31300320091 is an apocalyptic number.

31300320091 is a deficient number, since it is larger than the sum of its proper divisors (1).

31300320091 is an equidigital number, since it uses as much as digits as its factorization.

31300320091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 486, while the sum is 22.

The spelling of 31300320091 in words is "thirty-one billion, three hundred million, three hundred twenty thousand, ninety-one".