23195813 has 2 divisors, whose sum is σ = 23195814. Its totient is φ = 23195812.

The previous prime is 23195807. The next prime is 23195819. The reversal of 23195813 is 31859132.

It is a balanced prime because it is at equal distance from previous prime (23195807) and next prime (23195819).

It can be written as a sum of positive squares in only one way, i.e., 18258529 + 4937284 = 4273^2 + 2222^2 .

It is a cyclic number.

It is not a de Polignac number, because 23195813 - 2⁴ = 23195797 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 23195813.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23195819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11597906 + 11597907.

It is an arithmetic number, because the mean of its divisors is an integer number (11597907).

Almost surely, 2^23195813 is an apocalyptic number.

It is an amenable number.

23195813 is a deficient number, since it is larger than the sum of its proper divisors (1).

23195813 is an equidigital number, since it uses as much as digits as its factorization.

23195813 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6480, while the sum is 32.

The square root of 23195813 is about 4816.2031726247. The cubic root of 23195813 is about 285.1914708024.

The spelling of 23195813 in words is "twenty-three million, one hundred ninety-five thousand, eight hundred thirteen".