16324253431 has 4 divisors (see below), whose sum is σ = 16328752864. Its totient is φ = 16319754000.

The previous prime is 16324253359. The next prime is 16324253447. The reversal of 16324253431 is 13435242361.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16324253431 is a prime.

It is a super-2 number, since 2×16324253431² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16324253461) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2244270 + ... + 2251531.

It is an arithmetic number, because the mean of its divisors is an integer number (4082188216).

Almost surely, 2^16324253431 is an apocalyptic number.

16324253431 is a deficient number, since it is larger than the sum of its proper divisors (4499433).

16324253431 is an equidigital number, since it uses as much as digits as its factorization.

16324253431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4499432.

The product of its digits is 51840, while the sum is 34.

Adding to 16324253431 its reverse (13435242361), we get a palindrome (29759495792).

The spelling of 16324253431 in words is "sixteen billion, three hundred twenty-four million, two hundred fifty-three thousand, four hundred thirty-one".