16195131 has 12 divisors (see below), whose sum is σ = 23496408. Its totient is φ = 10749024.

The previous prime is 16195129. The next prime is 16195139. The reversal of 16195131 is 13159161.

It is not a de Polignac number, because 16195131 - 2¹ = 16195129 is a prime.

It is a super-2 number, since 2×16195131² = 524564536214322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 16195095 and 16195104.

It is not an unprimeable number, because it can be changed into a prime (16195139) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1765 + ... + 5958.

It is an arithmetic number, because the mean of its divisors is an integer number (1958034).

Almost surely, 2^16195131 is an apocalyptic number.

16195131 is a deficient number, since it is larger than the sum of its proper divisors (7301277).

16195131 is a wasteful number, since it uses less digits than its factorization.

16195131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7962 (or 7959 counting only the distinct ones).

The product of its digits is 810, while the sum is 27.

The square root of 16195131 is about 4024.3174576566. The cubic root of 16195131 is about 253.0044472131.

The spelling of 16195131 in words is "sixteen million, one hundred ninety-five thousand, one hundred thirty-one".