23101391 has 8 divisors (see below), whose sum is σ = 23587200. Its totient is φ = 22618840.

The previous prime is 23101387. The next prime is 23101439. The reversal of 23101391 is 19310132.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 23101391 - 2² = 23101387 is a prime.

It is a super-2 number, since 2×23101391² = 1067348532269762, 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 (23101301) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17720 + ... + 18978.

It is an arithmetic number, because the mean of its divisors is an integer number (2948400).

Almost surely, 2^23101391 is an apocalyptic number.

23101391 is a deficient number, since it is larger than the sum of its proper divisors (485809).

23101391 is a wasteful number, since it uses less digits than its factorization.

23101391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1629.

The product of its (nonzero) digits is 162, while the sum is 20.

The square root of 23101391 is about 4806.3906416354. The cubic root of 23101391 is about 284.8039731316.

The spelling of 23101391 in words is "twenty-three million, one hundred one thousand, three hundred ninety-one".