40723631 has 16 divisors (see below), whose sum is σ = 46771200. Its totient is φ = 35144928.

The previous prime is 40723601. The next prime is 40723651. The reversal of 40723631 is 13632704.

It is a de Polignac number, because none of the positive numbers 2^k-40723631 is a prime.

It is a super-2 number, since 2×40723631² = 3316828243648322, which contains 22 as substring.

It is a Duffinian number.

It is a plaindrome in base 12.

It is a zygodrome in base 12.

It is a self number, because there is not a number n which added to its sum of digits gives 40723631.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40723601) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18470 + ... + 20556.

It is an arithmetic number, because the mean of its divisors is an integer number (2923200).

Almost surely, 2^40723631 is an apocalyptic number.

40723631 is a deficient number, since it is larger than the sum of its proper divisors (6047569).

40723631 is a wasteful number, since it uses less digits than its factorization.

40723631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2198.

The product of its (nonzero) digits is 3024, while the sum is 26.

The square root of 40723631 is about 6381.5069536905. The cubic root of 40723631 is about 344.0451958600.

The spelling of 40723631 in words is "forty million, seven hundred twenty-three thousand, six hundred thirty-one".