40431352 has 32 divisors (see below), whose sum is σ = 83548080. Its totient is φ = 18224640.

The previous prime is 40431337. The next prime is 40431359. The reversal of 40431352 is 25313404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40431359) 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, 49 + ... + 8992.

Almost surely, 2^40431352 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40431352, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41774040).

40431352 is an abundant number, since it is smaller than the sum of its proper divisors (43116728).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40431352 is a wasteful number, since it uses less digits than its factorization.

40431352 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9103 (or 9099 counting only the distinct ones).

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

The square root of 40431352 is about 6358.5652469720. The cubic root of 40431352 is about 343.2201325573.

Adding to 40431352 its reverse (25313404), we get a palindrome (65744756).

The spelling of 40431352 in words is "forty million, four hundred thirty-one thousand, three hundred fifty-two".