3120231718091 has 2 divisors, whose sum is σ = 3120231718092. Its totient is φ = 3120231718090.

The previous prime is 3120231718073. The next prime is 3120231718111. The reversal of 3120231718091 is 1908171320213.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3120231718091 - 2⁶ = 3120231718027 is a prime.

It is a super-2 number, since 2×3120231718091² (a number of 26 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (3120231718991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1560115859045 + 1560115859046.

It is an arithmetic number, because the mean of its divisors is an integer number (1560115859046).

Almost surely, 2^{3120231718091} is an apocalyptic number.

3120231718091 is a deficient number, since it is larger than the sum of its proper divisors (1).

3120231718091 is an equidigital number, since it uses as much as digits as its factorization.

3120231718091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18144, while the sum is 38.

The spelling of 3120231718091 in words is "three trillion, one hundred twenty billion, two hundred thirty-one million, seven hundred eighteen thousand, ninety-one".