196691331 has 16 divisors (see below), whose sum is σ = 280025856. Its totient is φ = 122507616.

The previous prime is 196691317. The next prime is 196691333. The reversal of 196691331 is 133196691.

196691331 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 196691331 - 2⁷ = 196691203 is a prime.

It is a super-2 number, since 2×196691331² = 77374959381103122, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 196691331.

It is not an unprimeable number, because it can be changed into a prime (196691333) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30180 + ... + 36113.

It is an arithmetic number, because the mean of its divisors is an integer number (17501616).

Almost surely, 2^196691331 is an apocalyptic number.

196691331 is a deficient number, since it is larger than the sum of its proper divisors (83334525).

196691331 is a wasteful number, since it uses less digits than its factorization.

196691331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66362.

The product of its digits is 26244, while the sum is 39.

The square root of 196691331 is about 14024.6686591876. The cubic root of 196691331 is about 581.5607300535.

The spelling of 196691331 in words is "one hundred ninety-six million, six hundred ninety-one thousand, three hundred thirty-one".