40024431 has 36 divisors (see below), whose sum is σ = 62130432. Its totient is φ = 24820992.

The previous prime is 40024423. The next prime is 40024433. The reversal of 40024431 is 13442004.

It is not a de Polignac number, because 40024431 - 2³ = 40024423 is a prime.

It is a super-2 number, since 2×40024431² = 3203910153747522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40024433) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 315090 + ... + 315216.

Almost surely, 2^40024431 is an apocalyptic number.

40024431 is a deficient number, since it is larger than the sum of its proper divisors (22106001).

40024431 is a wasteful number, since it uses less digits than its factorization.

40024431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 268 (or 246 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 40024431 is about 6326.4864656458. The cubic root of 40024431 is about 342.0648025352.

Adding to 40024431 its reverse (13442004), we get a palindrome (53466435).

The spelling of 40024431 in words is "forty million, twenty-four thousand, four hundred thirty-one".