23981395 has 4 divisors (see below), whose sum is σ = 28777680. Its totient is φ = 19185112.

The previous prime is 23981389. The next prime is 23981411. The reversal of 23981395 is 59318932.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23981395 is a prime.

It is a super-2 number, since 2×23981395² = 1150214612292050, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2398135 + ... + 2398144.

It is an arithmetic number, because the mean of its divisors is an integer number (7194420).

Almost surely, 2^23981395 is an apocalyptic number.

23981395 is a deficient number, since it is larger than the sum of its proper divisors (4796285).

23981395 is an equidigital number, since it uses as much as digits as its factorization.

23981395 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4796284.

The product of its digits is 58320, while the sum is 40.

The square root of 23981395 is about 4897.0802525587. The cubic root of 23981395 is about 288.3753585338.

The spelling of 23981395 in words is "twenty-three million, nine hundred eighty-one thousand, three hundred ninety-five".