23691001 has 4 divisors (see below), whose sum is σ = 23704912. Its totient is φ = 23677092.

The previous prime is 23690983. The next prime is 23691007. The reversal of 23691001 is 10019632.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 23691001 - 2⁷ = 23690873 is a prime.

It is a super-2 number, since 2×23691001² = 1122527056764002, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23691007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3975 + ... + 7948.

It is an arithmetic number, because the mean of its divisors is an integer number (5926228).

Almost surely, 2^23691001 is an apocalyptic number.

It is an amenable number.

23691001 is a deficient number, since it is larger than the sum of its proper divisors (13911).

23691001 is a wasteful number, since it uses less digits than its factorization.

23691001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13910.

The product of its (nonzero) digits is 324, while the sum is 22.

The square root of 23691001 is about 4867.3402387752. The cubic root of 23691001 is about 287.2066361041.

The spelling of 23691001 in words is "twenty-three million, six hundred ninety-one thousand, one".