431031404 has 12 divisors (see below), whose sum is σ = 768537504. Its totient is φ = 211449264.

The previous prime is 431031373. The next prime is 431031427. The reversal of 431031404 is 404130134.

It is a happy number.

It is a super-2 number, since 2×431031404² = 371576142468422432, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1016372 + ... + 1016795.

It is an arithmetic number, because the mean of its divisors is an integer number (64044792).

Almost surely, 2^431031404 is an apocalyptic number.

It is an amenable number.

431031404 is a deficient number, since it is larger than the sum of its proper divisors (337506100).

431031404 is a wasteful number, since it uses less digits than its factorization.

431031404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2033224 (or 2033222 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 431031404 is about 20761.2958169764. The cubic root of 431031404 is about 755.3872282297.

Adding to 431031404 its reverse (404130134), we get a palindrome (835161538).

The spelling of 431031404 in words is "four hundred thirty-one million, thirty-one thousand, four hundred four".