40045251131 has 2 divisors, whose sum is σ = 40045251132. Its totient is φ = 40045251130.

The previous prime is 40045251023. The next prime is 40045251133. The reversal of 40045251131 is 13115254004.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40045251131 - 2²² = 40041056827 is a prime.

It is a super-2 number, since 2×40045251131² (a number of 22 digits) contains 22 as substring.

It is a Sophie Germain prime.

Together with 40045251133, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 40045251131.

It is not a weakly prime, because it can be changed into another prime (40045251133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20022625565 + 20022625566.

It is an arithmetic number, because the mean of its divisors is an integer number (20022625566).

Almost surely, 2^40045251131 is an apocalyptic number.

40045251131 is a deficient number, since it is larger than the sum of its proper divisors (1).

40045251131 is an equidigital number, since it uses as much as digits as its factorization.

40045251131 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2400, while the sum is 26.

The spelling of 40045251131 in words is "forty billion, forty-five million, two hundred fifty-one thousand, one hundred thirty-one".