40132431 has 6 divisors (see below), whose sum is σ = 57969080. Its totient is φ = 26754948.

The previous prime is 40132429. The next prime is 40132439. The reversal of 40132431 is 13423104.

It is not a de Polignac number, because 40132431 - 2¹ = 40132429 is a prime.

It is a super-2 number, since 2×40132431² = 3221224035939522, 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 (40132439) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2229571 + ... + 2229588.

Almost surely, 2^40132431 is an apocalyptic number.

40132431 is a deficient number, since it is larger than the sum of its proper divisors (17836649).

40132431 is a wasteful number, since it uses less digits than its factorization.

40132431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4459165 (or 4459162 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 40132431 is about 6335.0162588584. The cubic root of 40132431 is about 342.3721966198.

Adding to 40132431 its reverse (13423104), we get a palindrome (53555535).

The spelling of 40132431 in words is "forty million, one hundred thirty-two thousand, four hundred thirty-one".