40183631 has 4 divisors (see below), whose sum is σ = 42547392. Its totient is φ = 37819872.

The previous prime is 40183621. The next prime is 40183639. The reversal of 40183631 is 13638104.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 40183631 - 2¹⁰ = 40182607 is a prime.

It is a super-2 number, since 2×40183631² = 3229448400688322, 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 40183631.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40183639) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1181855 + ... + 1181888.

It is an arithmetic number, because the mean of its divisors is an integer number (10636848).

Almost surely, 2^40183631 is an apocalyptic number.

40183631 is a deficient number, since it is larger than the sum of its proper divisors (2363761).

40183631 is a wasteful number, since it uses less digits than its factorization.

40183631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2363760.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 40183631 is about 6339.0560022767. The cubic root of 40183631 is about 342.5177315131.

The spelling of 40183631 in words is "forty million, one hundred eighty-three thousand, six hundred thirty-one".