313220032091 has 2 divisors, whose sum is σ = 313220032092. Its totient is φ = 313220032090.

The previous prime is 313220032079. The next prime is 313220032109. The reversal of 313220032091 is 190230022313.

Together with next prime (313220032109) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is an emirp because it is prime and its reverse (190230022313) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-313220032091 is a prime.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 313220032091.

It is not a weakly prime, because it can be changed into another prime (313220032001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156610016045 + 156610016046.

It is an arithmetic number, because the mean of its divisors is an integer number (156610016046).

Almost surely, 2^313220032091 is an apocalyptic number.

313220032091 is a deficient number, since it is larger than the sum of its proper divisors (1).

313220032091 is an equidigital number, since it uses as much as digits as its factorization.

313220032091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1944, while the sum is 26.

The spelling of 313220032091 in words is "three hundred thirteen billion, two hundred twenty million, thirty-two thousand, ninety-one".