40943431 has 2 divisors, whose sum is σ = 40943432. Its totient is φ = 40943430.

The previous prime is 40943393. The next prime is 40943453. The reversal of 40943431 is 13434904.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40943431 is a prime.

It is a super-2 number, since 2×40943431² = 3352729084103522, which contains 22 as substring.

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 40943431.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40943131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20471715 + 20471716.

It is an arithmetic number, because the mean of its divisors is an integer number (20471716).

Almost surely, 2^40943431 is an apocalyptic number.

40943431 is a deficient number, since it is larger than the sum of its proper divisors (1).

40943431 is an equidigital number, since it uses as much as digits as its factorization.

40943431 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5184, while the sum is 28.

The square root of 40943431 is about 6398.7054159416. The cubic root of 40943431 is about 344.6630638911.

The spelling of 40943431 in words is "forty million, nine hundred forty-three thousand, four hundred thirty-one".