16424720131 has 4 divisors (see below), whose sum is σ = 16533493264. Its totient is φ = 16315947000.

The previous prime is 16424720093. The next prime is 16424720189. The reversal of 16424720131 is 13102742461.

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 16424720131 - 2¹⁷ = 16424589059 is a prime.

It is a super-2 number, since 2×16424720131² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 16424720093 and 16424720102.

It is not an unprimeable number, because it can be changed into a prime (16424727131) 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, 54386340 + ... + 54386641.

It is an arithmetic number, because the mean of its divisors is an integer number (4133373316).

Almost surely, 2^16424720131 is an apocalyptic number.

16424720131 is a deficient number, since it is larger than the sum of its proper divisors (108773133).

16424720131 is a wasteful number, since it uses less digits than its factorization.

16424720131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108773132.

The product of its (nonzero) digits is 8064, while the sum is 31.

The spelling of 16424720131 in words is "sixteen billion, four hundred twenty-four million, seven hundred twenty thousand, one hundred thirty-one".