16319131 has 4 divisors (see below), whose sum is σ = 16335232. Its totient is φ = 16303032.

The previous prime is 16319117. The next prime is 16319161. The reversal of 16319131 is 13191361.

It is a happy number.

16319131 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 16319131 - 2⁷ = 16319003 is a prime.

It is a super-2 number, since 2×16319131² = 532628073190322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 16319096 and 16319105.

It is not an unprimeable number, because it can be changed into a prime (16319101) 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, 6420 + ... + 8593.

It is an arithmetic number, because the mean of its divisors is an integer number (4083808).

Almost surely, 2^16319131 is an apocalyptic number.

16319131 is a deficient number, since it is larger than the sum of its proper divisors (16101).

16319131 is a wasteful number, since it uses less digits than its factorization.

16319131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16100.

The product of its digits is 486, while the sum is 25.

The square root of 16319131 is about 4039.6944191362. The cubic root of 16319131 is about 253.6485260015.

The spelling of 16319131 in words is "sixteen million, three hundred nineteen thousand, one hundred thirty-one".