16309009131 has 4 divisors (see below), whose sum is σ = 21745345512. Its totient is φ = 10872672752.

The previous prime is 16309009111. The next prime is 16309009141. The reversal of 16309009131 is 13190090361.

It is a happy number.

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 16309009131 - 2⁵ = 16309009099 is a prime.

It is a super-2 number, since 2×16309009131² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 16309009092 and 16309009101.

It is not an unprimeable number, because it can be changed into a prime (16309009111) 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, 2718168186 + ... + 2718168191.

It is an arithmetic number, because the mean of its divisors is an integer number (5436336378).

Almost surely, 2^16309009131 is an apocalyptic number.

16309009131 is a deficient number, since it is larger than the sum of its proper divisors (5436336381).

16309009131 is an equidigital number, since it uses as much as digits as its factorization.

16309009131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5436336380.

The product of its (nonzero) digits is 4374, while the sum is 33.

Adding to 16309009131 its reverse (13190090361), we get a palindrome (29499099492).

The spelling of 16309009131 in words is "sixteen billion, three hundred nine million, nine thousand, one hundred thirty-one".