40906304431 has 2 divisors, whose sum is σ = 40906304432. Its totient is φ = 40906304430.

The previous prime is 40906304407. The next prime is 40906304459. The reversal of 40906304431 is 13440360904.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40906304431 - 2⁵ = 40906304399 is a prime.

It is a super-2 number, since 2×40906304431² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40906301431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20453152215 + 20453152216.

It is an arithmetic number, because the mean of its divisors is an integer number (20453152216).

Almost surely, 2^40906304431 is an apocalyptic number.

40906304431 is a deficient number, since it is larger than the sum of its proper divisors (1).

40906304431 is an equidigital number, since it uses as much as digits as its factorization.

40906304431 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 31104, while the sum is 34.

The spelling of 40906304431 in words is "forty billion, nine hundred six million, three hundred four thousand, four hundred thirty-one".