431440133432 has 64 divisors (see below), whose sum is σ = 1009456300800. Its totient is φ = 167944400640.

The previous prime is 431440133363. The next prime is 431440133441. The reversal of 431440133432 is 234331044134.

It is a super-2 number, since 2×431440133432² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 385283 + ... + 1005645.

It is an arithmetic number, because the mean of its divisors is an integer number (15772754700).

Almost surely, 2^431440133432 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 431440133432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (504728150400).

431440133432 is an abundant number, since it is smaller than the sum of its proper divisors (578016167368).

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

431440133432 is a wasteful number, since it uses less digits than its factorization.

431440133432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 621516 (or 621512 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 32.

Adding to 431440133432 its reverse (234331044134), we get a palindrome (665771177566).

The spelling of 431440133432 in words is "four hundred thirty-one billion, four hundred forty million, one hundred thirty-three thousand, four hundred thirty-two".