431981004 has 96 divisors (see below), whose sum is σ = 1257786880. Its totient is φ = 112347648.

The previous prime is 431980993. The next prime is 431981021. The reversal of 431981004 is 400189134.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 77007 + ... + 82425.

Almost surely, 2^431981004 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 431981004, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (628893440).

431981004 is an abundant number, since it is smaller than the sum of its proper divisors (825805876).

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

431981004 is a wasteful number, since it uses less digits than its factorization.

431981004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5519 (or 5517 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 30.

The square root of 431981004 is about 20784.1527130648. The cubic root of 431981004 is about 755.9415494688.

The spelling of 431981004 in words is "four hundred thirty-one million, nine hundred eighty-one thousand, four".