40572831 has 32 divisors (see below), whose sum is σ = 61831168. Its totient is φ = 23483520.

The previous prime is 40572823. The next prime is 40572839. The reversal of 40572831 is 13827504.

It is an interprime number because it is at equal distance from previous prime (40572823) and next prime (40572839).

It is not a de Polignac number, because 40572831 - 2³ = 40572823 is a prime.

It is a super-2 number, since 2×40572831² = 3292309230709122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40572839) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 44280 + ... + 45186.

It is an arithmetic number, because the mean of its divisors is an integer number (1932224).

Almost surely, 2^40572831 is an apocalyptic number.

40572831 is a deficient number, since it is larger than the sum of its proper divisors (21258337).

40572831 is a wasteful number, since it uses less digits than its factorization.

40572831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 991.

The product of its (nonzero) digits is 6720, while the sum is 30.

The square root of 40572831 is about 6369.6806042375. The cubic root of 40572831 is about 343.6200030322.

The spelling of 40572831 in words is "forty million, five hundred seventy-two thousand, eight hundred thirty-one".