23136919 has 16 divisors (see below), whose sum is σ = 26191872. Its totient is φ = 20278368.

The previous prime is 23136917. The next prime is 23136923. The reversal of 23136919 is 91963132.

It is a cyclic number.

It is not a de Polignac number, because 23136919 - 2¹ = 23136917 is a prime.

It is a super-2 number, since 2×23136919² = 1070634041625122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23136913) 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 15 ways as a sum of consecutive naturals, for example, 66504 + ... + 66850.

It is an arithmetic number, because the mean of its divisors is an integer number (1636992).

Almost surely, 2^23136919 is an apocalyptic number.

23136919 is a deficient number, since it is larger than the sum of its proper divisors (3054953).

23136919 is a wasteful number, since it uses less digits than its factorization.

23136919 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 606.

The product of its digits is 8748, while the sum is 34.

The square root of 23136919 is about 4810.0851343817. The cubic root of 23136919 is about 284.9498998833.

The spelling of 23136919 in words is "twenty-three million, one hundred thirty-six thousand, nine hundred nineteen".