3031312231993 has 2 divisors, whose sum is σ = 3031312231994. Its totient is φ = 3031312231992.

The previous prime is 3031312231951. The next prime is 3031312232021. The reversal of 3031312231993 is 3991322131303.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1948405597609 + 1082906634384 = 1395853^2 + 1040628^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3031312231993 is a prime.

It is not a weakly prime, because it can be changed into another prime (3031312231093) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1515656115996 + 1515656115997.

It is an arithmetic number, because the mean of its divisors is an integer number (1515656115997).

Almost surely, 2^{3031312231993} is an apocalyptic number.

It is an amenable number.

3031312231993 is a deficient number, since it is larger than the sum of its proper divisors (1).

3031312231993 is an equidigital number, since it uses as much as digits as its factorization.

3031312231993 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 78732, while the sum is 40.

The spelling of 3031312231993 in words is "three trillion, thirty-one billion, three hundred twelve million, two hundred thirty-one thousand, nine hundred ninety-three".