40431031032 has 32 divisors (see below), whose sum is σ = 115517232000. Its totient is φ = 11551723104.

The previous prime is 40431031027. The next prime is 40431031033. The reversal of 40431031032 is 23013013404.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40431031033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 120330282 + ... + 120330617.

It is an arithmetic number, because the mean of its divisors is an integer number (3609913500).

Almost surely, 2^40431031032 is an apocalyptic number.

40431031032 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

It is an amenable number.

40431031032 is an abundant number, since it is smaller than the sum of its proper divisors (75086200968).

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

40431031032 is a wasteful number, since it uses less digits than its factorization.

40431031032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 240660915 (or 240660911 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 40431031032 its reverse (23013013404), we get a palindrome (63444044436).

The spelling of 40431031032 in words is "forty billion, four hundred thirty-one million, thirty-one thousand, thirty-two".