16223503231 has 4 divisors (see below), whose sum is σ = 17471465032. Its totient is φ = 14975541432.

The previous prime is 16223503207. The next prime is 16223503237. The reversal of 16223503231 is 13230532261.

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

It is a cyclic number.

It is not a de Polignac number, because 16223503231 - 2⁷ = 16223503103 is a prime.

It is a super-2 number, since 2×16223503231² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 16223503231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16223503237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 623980881 + ... + 623980906.

It is an arithmetic number, because the mean of its divisors is an integer number (4367866258).

Almost surely, 2^16223503231 is an apocalyptic number.

16223503231 is a deficient number, since it is larger than the sum of its proper divisors (1247961801).

16223503231 is a wasteful number, since it uses less digits than its factorization.

16223503231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1247961800.

The product of its (nonzero) digits is 6480, while the sum is 28.

The spelling of 16223503231 in words is "sixteen billion, two hundred twenty-three million, five hundred three thousand, two hundred thirty-one".