7901031331331 has 2 divisors, whose sum is σ = 7901031331332. Its totient is φ = 7901031331330.

The previous prime is 7901031331327. The next prime is 7901031331397. The reversal of 7901031331331 is 1331331301097.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 7901031331331 - 2² = 7901031331327 is a prime.

It is a super-2 number, since 2×7901031331331² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 7901031331291 and 7901031331300.

It is not a weakly prime, because it can be changed into another prime (7901031331231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3950515665665 + 3950515665666.

It is an arithmetic number, because the mean of its divisors is an integer number (3950515665666).

Almost surely, 2^{7901031331331} is an apocalyptic number.

7901031331331 is a deficient number, since it is larger than the sum of its proper divisors (1).

7901031331331 is an equidigital number, since it uses as much as digits as its factorization.

7901031331331 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15309, while the sum is 35.

The spelling of 7901031331331 in words is "seven trillion, nine hundred one billion, thirty-one million, three hundred thirty-one thousand, three hundred thirty-one".