402431043432 has 48 divisors (see below), whose sum is σ = 1105853908320. Its totient is φ = 121948800160.

The previous prime is 402431043403. The next prime is 402431043449. The reversal of 402431043432 is 234340134204.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 402431043432.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 69286188 + ... + 69291995.

It is an arithmetic number, because the mean of its divisors is an integer number (23038623090).

Almost surely, 2^402431043432 is an apocalyptic number.

It is an amenable number.

402431043432 is an abundant number, since it is smaller than the sum of its proper divisors (703422864888).

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

402431043432 is a wasteful number, since it uses less digits than its factorization.

402431043432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138578214 (or 138578199 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 30.

Adding to 402431043432 its reverse (234340134204), we get a palindrome (636771177636).

The spelling of 402431043432 in words is "four hundred two billion, four hundred thirty-one million, forty-three thousand, four hundred thirty-two".