40999981331 has 2 divisors, whose sum is σ = 40999981332. Its totient is φ = 40999981330.

The previous prime is 40999981247. The next prime is 40999981349. The reversal of 40999981331 is 13318999904.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40999981331 is a prime.

It is a super-2 number, since 2×40999981331² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (40999981381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20499990665 + 20499990666.

It is an arithmetic number, because the mean of its divisors is an integer number (20499990666).

Almost surely, 2^40999981331 is an apocalyptic number.

40999981331 is a deficient number, since it is larger than the sum of its proper divisors (1).

40999981331 is an equidigital number, since it uses as much as digits as its factorization.

40999981331 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1889568, while the sum is 56.

The spelling of 40999981331 in words is "forty billion, nine hundred ninety-nine million, nine hundred eighty-one thousand, three hundred thirty-one".