40573931 has 4 divisors (see below), whose sum is σ = 40638864. Its totient is φ = 40509000.

The previous prime is 40573919. The next prime is 40573933. The reversal of 40573931 is 13937504.

It is a happy number.

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 40573931 - 2¹⁰ = 40572907 is a prime.

It is a super-2 number, since 2×40573931² = 3292487753585522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40573933) 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, 31520 + ... + 32781.

It is an arithmetic number, because the mean of its divisors is an integer number (10159716).

Almost surely, 2^40573931 is an apocalyptic number.

40573931 is a deficient number, since it is larger than the sum of its proper divisors (64933).

40573931 is an equidigital number, since it uses as much as digits as its factorization.

40573931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64932.

The product of its (nonzero) digits is 11340, while the sum is 32.

The square root of 40573931 is about 6369.7669502110. The cubic root of 40573931 is about 343.6231083827.

The spelling of 40573931 in words is "forty million, five hundred seventy-three thousand, nine hundred thirty-one".