23196681 has 6 divisors (see below), whose sum is σ = 33506330. Its totient is φ = 15464448.

The previous prime is 23196671. The next prime is 23196697. The reversal of 23196681 is 18669132.

It can be written as a sum of positive squares in only one way, i.e., 20169081 + 3027600 = 4491^2 + 1740^2 .

It is a de Polignac number, because none of the positive numbers 2^k-23196681 is a prime.

It is a super-2 number, since 2×23196681² = 1076172018831522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23196601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1288696 + ... + 1288713.

Almost surely, 2^23196681 is an apocalyptic number.

It is an amenable number.

23196681 is a deficient number, since it is larger than the sum of its proper divisors (10309649).

23196681 is a wasteful number, since it uses less digits than its factorization.

23196681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2577415 (or 2577412 counting only the distinct ones).

The product of its digits is 15552, while the sum is 36.

The square root of 23196681 is about 4816.2932842592. The cubic root of 23196681 is about 285.1950280982.

The spelling of 23196681 in words is "twenty-three million, one hundred ninety-six thousand, six hundred eighty-one".