196803931 has 4 divisors (see below), whose sum is σ = 199295200. Its totient is φ = 194312664.

The previous prime is 196803911. The next prime is 196803953. The reversal of 196803931 is 139308691.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 139308691 = 43 ⋅3239737.

It is a cyclic number.

It is not a de Polignac number, because 196803931 - 2¹¹ = 196801883 is a prime.

It is a super-2 number, since 2×196803931² = 77463574514105522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (196803911) 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, 1245516 + ... + 1245673.

It is an arithmetic number, because the mean of its divisors is an integer number (49823800).

Almost surely, 2^196803931 is an apocalyptic number.

196803931 is a deficient number, since it is larger than the sum of its proper divisors (2491269).

196803931 is an equidigital number, since it uses as much as digits as its factorization.

196803931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2491268.

The product of its (nonzero) digits is 34992, while the sum is 40.

The square root of 196803931 is about 14028.6824399157. The cubic root of 196803931 is about 581.6716843527.

The spelling of 196803931 in words is "one hundred ninety-six million, eight hundred three thousand, nine hundred thirty-one".