23401087 has 4 divisors (see below), whose sum is σ = 23420376. Its totient is φ = 23381800.

The previous prime is 23401019. The next prime is 23401093. The reversal of 23401087 is 78010432.

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 23401087 - 2¹¹ = 23399039 is a prime.

It is a super-2 number, since 2×23401087² = 1095221745563138, 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 (23401487) 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, 7693 + ... + 10294.

It is an arithmetic number, because the mean of its divisors is an integer number (5855094).

Almost surely, 2^23401087 is an apocalyptic number.

23401087 is a deficient number, since it is larger than the sum of its proper divisors (19289).

23401087 is a wasteful number, since it uses less digits than its factorization.

23401087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19288.

The product of its (nonzero) digits is 1344, while the sum is 25.

The square root of 23401087 is about 4837.4670024714. The cubic root of 23401087 is about 286.0302794485.

The spelling of 23401087 in words is "twenty-three million, four hundred one thousand, eighty-seven".