431990694906 has 16 divisors (see below), whose sum is σ = 869281891104. Its totient is φ = 143113481424.

The previous prime is 431990694799. The next prime is 431990694913. The reversal of 431990694906 is 609496099134.

It is a self number, because there is not a number n which added to its sum of digits gives 431990694906.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 220853161 + ... + 220855116.

It is an arithmetic number, because the mean of its divisors is an integer number (54330118194).

Almost surely, 2^431990694906 is an apocalyptic number.

431990694906 is an abundant number, since it is smaller than the sum of its proper divisors (437291196198).

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

431990694906 is a wasteful number, since it uses less digits than its factorization.

431990694906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 441708445.

The product of its (nonzero) digits is 11337408, while the sum is 60.

The spelling of 431990694906 in words is "four hundred thirty-one billion, nine hundred ninety million, six hundred ninety-four thousand, nine hundred six".