40310243013991 has 2 divisors, whose sum is σ = 40310243013992. Its totient is φ = 40310243013990.

The previous prime is 40310243013941. The next prime is 40310243014007. The reversal of 40310243013991 is 19931034201304.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40310243013991 - 2⁷ = 40310243013863 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40310243013941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20155121506995 + 20155121506996.

It is an arithmetic number, because the mean of its divisors is an integer number (20155121506996).

Almost surely, 2^{40310243013991} is an apocalyptic number.

40310243013991 is a deficient number, since it is larger than the sum of its proper divisors (1).

40310243013991 is an equidigital number, since it uses as much as digits as its factorization.

40310243013991 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 69984, while the sum is 40.

The spelling of 40310243013991 in words is "forty trillion, three hundred ten billion, two hundred forty-three million, thirteen thousand, nine hundred ninety-one".