40431337 has 2 divisors, whose sum is σ = 40431338. Its totient is φ = 40431336.

The previous prime is 40431329. The next prime is 40431359. The reversal of 40431337 is 73313404.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 35748441 + 4682896 = 5979^2 + 2164^2 .

It is a cyclic number.

It is not a de Polignac number, because 40431337 - 2³ = 40431329 is a prime.

It is not a weakly prime, because it can be changed into another prime (40431317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20215668 + 20215669.

It is an arithmetic number, because the mean of its divisors is an integer number (20215669).

Almost surely, 2^40431337 is an apocalyptic number.

It is an amenable number.

40431337 is a deficient number, since it is larger than the sum of its proper divisors (1).

40431337 is an equidigital number, since it uses as much as digits as its factorization.

40431337 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3024, while the sum is 25.

The square root of 40431337 is about 6358.5640674605. The cubic root of 40431337 is about 343.2200901125.

The spelling of 40431337 in words is "forty million, four hundred thirty-one thousand, three hundred thirty-seven".