40544731 has 2 divisors, whose sum is σ = 40544732. Its totient is φ = 40544730.

The previous prime is 40544729. The next prime is 40544747. The reversal of 40544731 is 13744504.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40544731 - 2¹ = 40544729 is a prime.

It is a super-2 number, since 2×40544731² = 3287750423724722, which contains 22 as substring.

Together with 40544729, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 40544731.

It is not a weakly prime, because it can be changed into another prime (40544701) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20272365 + 20272366.

It is an arithmetic number, because the mean of its divisors is an integer number (20272366).

Almost surely, 2^40544731 is an apocalyptic number.

40544731 is a deficient number, since it is larger than the sum of its proper divisors (1).

40544731 is an equidigital number, since it uses as much as digits as its factorization.

40544731 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6720, while the sum is 28.

The square root of 40544731 is about 6367.4744600980. The cubic root of 40544731 is about 343.5406564035.

The spelling of 40544731 in words is "forty million, five hundred forty-four thousand, seven hundred thirty-one".