16431512326 has 16 divisors (see below), whose sum is σ = 25042385520. Its totient is φ = 8084926080.

The previous prime is 16431512243. The next prime is 16431512347. The reversal of 16431512326 is 62321513461.

It is a junction number, because it is equal to n+sod(n) for n = 16431512291 and 16431512300.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 181191 + ... + 256306.

It is an arithmetic number, because the mean of its divisors is an integer number (1565149095).

Almost surely, 2^16431512326 is an apocalyptic number.

16431512326 is a deficient number, since it is larger than the sum of its proper divisors (8610873194).

16431512326 is a wasteful number, since it uses less digits than its factorization.

16431512326 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 437799.

The product of its digits is 25920, while the sum is 34.

The spelling of 16431512326 in words is "sixteen billion, four hundred thirty-one million, five hundred twelve thousand, three hundred twenty-six".