431440012 has 6 divisors (see below), whose sum is σ = 755020028. Its totient is φ = 215720004.

The previous prime is 431439997. The next prime is 431440013. The reversal of 431440012 is 210044134.

It is a super-2 number, since 2×431440012² = 372280967909120288, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (431440013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53929998 + ... + 53930005.

Almost surely, 2^431440012 is an apocalyptic number.

It is an amenable number.

431440012 is a deficient number, since it is larger than the sum of its proper divisors (323580016).

431440012 is a wasteful number, since it uses less digits than its factorization.

431440012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107860007 (or 107860005 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 431440012 is about 20771.1341048100. The cubic root of 431440012 is about 755.6258494993.

Adding to 431440012 its reverse (210044134), we get a palindrome (641484146).

The spelling of 431440012 in words is "four hundred thirty-one million, four hundred forty thousand, twelve".