23171963 has 4 divisors (see below), whose sum is σ = 24391560. Its totient is φ = 21952368.

The previous prime is 23171959. The next prime is 23171977. The reversal of 23171963 is 36917132.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 23171963 - 2² = 23171959 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23171903) 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, 609770 + ... + 609807.

It is an arithmetic number, because the mean of its divisors is an integer number (6097890).

Almost surely, 2^23171963 is an apocalyptic number.

23171963 is a deficient number, since it is larger than the sum of its proper divisors (1219597).

23171963 is a wasteful number, since it uses less digits than its factorization.

23171963 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1219596.

The product of its digits is 6804, while the sum is 32.

The square root of 23171963 is about 4813.7265190287. The cubic root of 23171963 is about 285.0936923926.

The spelling of 23171963 in words is "twenty-three million, one hundred seventy-one thousand, nine hundred sixty-three".