40238331 has 16 divisors (see below), whose sum is σ = 61881600. Its totient is φ = 22781088.

The previous prime is 40238323. The next prime is 40238347. The reversal of 40238331 is 13383204.

It is not a de Polignac number, because 40238331 - 2³ = 40238323 is a prime.

It is a super-2 number, since 2×40238331² = 3238246563331122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (40238311) 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, 6501 + ... + 11078.

It is an arithmetic number, because the mean of its divisors is an integer number (3867600).

Almost surely, 2^40238331 is an apocalyptic number.

40238331 is a deficient number, since it is larger than the sum of its proper divisors (21643269).

40238331 is a wasteful number, since it uses less digits than its factorization.

40238331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17698.

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 40238331 is about 6343.3690575277. The cubic root of 40238331 is about 342.6730785581.

The spelling of 40238331 in words is "forty million, two hundred thirty-eight thousand, three hundred thirty-one".