40606431 has 16 divisors (see below), whose sum is σ = 57087744. Its totient is φ = 25622784.

The previous prime is 40606403. The next prime is 40606451. The reversal of 40606431 is 13460604.

It is not a de Polignac number, because 40606431 - 2⁷ = 40606303 is a prime.

It is a super-2 number, since 2×40606431² = 3297764477115522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40606451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3660 + ... + 9726.

It is an arithmetic number, because the mean of its divisors is an integer number (3567984).

Almost surely, 2^40606431 is an apocalyptic number.

40606431 is a deficient number, since it is larger than the sum of its proper divisors (16481313).

40606431 is a wasteful number, since it uses less digits than its factorization.

40606431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6190.

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 40606431 is about 6372.3175532925. The cubic root of 40606431 is about 343.7148320606.

The spelling of 40606431 in words is "forty million, six hundred six thousand, four hundred thirty-one".