40437631 has 8 divisors (see below), whose sum is σ = 43732304. Its totient is φ = 37169280.

The previous prime is 40437623. The next prime is 40437647. The reversal of 40437631 is 13673404.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 40437631 - 2³ = 40437623 is a prime.

It is a super-2 number, since 2×40437631² = 3270404001784322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 40437631.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40437431) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3321 + ... + 9586.

It is an arithmetic number, because the mean of its divisors is an integer number (5466538).

Almost surely, 2^40437631 is an apocalyptic number.

40437631 is a deficient number, since it is larger than the sum of its proper divisors (3294673).

40437631 is a wasteful number, since it uses less digits than its factorization.

40437631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13161.

The product of its (nonzero) digits is 6048, while the sum is 28.

The square root of 40437631 is about 6359.0589712630. The cubic root of 40437631 is about 343.2378990310.

The spelling of 40437631 in words is "forty million, four hundred thirty-seven thousand, six hundred thirty-one".