16431520223 has 8 divisors (see below), whose sum is σ = 16563970560. Its totient is φ = 16299118080.

The previous prime is 16431520213. The next prime is 16431520243. The reversal of 16431520223 is 32202513461.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 16431520223 - 2²⁶ = 16364411359 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16431520213) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1034663 + ... + 1050423.

It is an arithmetic number, because the mean of its divisors is an integer number (2070496320).

Almost surely, 2^16431520223 is an apocalyptic number.

16431520223 is a deficient number, since it is larger than the sum of its proper divisors (132450337).

16431520223 is a wasteful number, since it uses less digits than its factorization.

16431520223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24097.

The product of its (nonzero) digits is 8640, while the sum is 29.

The spelling of 16431520223 in words is "sixteen billion, four hundred thirty-one million, five hundred twenty thousand, two hundred twenty-three".