16304401431 has 24 divisors (see below), whose sum is σ = 24439877280. Its totient is φ = 10461627456.

The previous prime is 16304401427. The next prime is 16304401441. The reversal of 16304401431 is 13410440361.

It is not a de Polignac number, because 16304401431 - 2² = 16304401427 is a prime.

It is a super-2 number, since 2×16304401431² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 16304401395 and 16304401404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16304401411) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 15795 + ... + 181268.

It is an arithmetic number, because the mean of its divisors is an integer number (1018328220).

Almost surely, 2^16304401431 is an apocalyptic number.

16304401431 is a deficient number, since it is larger than the sum of its proper divisors (8135475849).

16304401431 is a wasteful number, since it uses less digits than its factorization.

16304401431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197415 (or 197412 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

Adding to 16304401431 its reverse (13410440361), we get a palindrome (29714841792).

The spelling of 16304401431 in words is "sixteen billion, three hundred four million, four hundred one thousand, four hundred thirty-one".