40532431 has 8 divisors (see below), whose sum is σ = 41000960. Its totient is φ = 40066488.

The previous prime is 40532423. The next prime is 40532449. The reversal of 40532431 is 13423504.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 40532431 - 2³ = 40532423 is a prime.

It is a super-2 number, since 2×40532431² = 3285755925539522, 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 (40532461) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55390 + ... + 56116.

It is an arithmetic number, because the mean of its divisors is an integer number (5125120).

Almost surely, 2^40532431 is an apocalyptic number.

40532431 is a deficient number, since it is larger than the sum of its proper divisors (468529).

40532431 is a wasteful number, since it uses less digits than its factorization.

40532431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1293.

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 40532431 is about 6366.5085407938. The cubic root of 40532431 is about 343.5059130691.

Adding to 40532431 its reverse (13423504), we get a palindrome (53955935).

The spelling of 40532431 in words is "forty million, five hundred thirty-two thousand, four hundred thirty-one".