16946871331 has 4 divisors (see below), whose sum is σ = 18250476832. Its totient is φ = 15643265832.

The previous prime is 16946871329. The next prime is 16946871353. The reversal of 16946871331 is 13317864961.

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 16946871331 - 2¹ = 16946871329 is a prime.

It is a super-2 number, since 2×16946871331² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16946871731) 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, 651802731 + ... + 651802756.

It is an arithmetic number, because the mean of its divisors is an integer number (4562619208).

Almost surely, 2^16946871331 is an apocalyptic number.

16946871331 is a deficient number, since it is larger than the sum of its proper divisors (1303605501).

16946871331 is a wasteful number, since it uses less digits than its factorization.

16946871331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1303605500.

The product of its digits is 653184, while the sum is 49.

The spelling of 16946871331 in words is "sixteen billion, nine hundred forty-six million, eight hundred seventy-one thousand, three hundred thirty-one".