23641397 has 4 divisors (see below), whose sum is σ = 25459980. Its totient is φ = 21822816.

The previous prime is 23641393. The next prime is 23641403. The reversal of 23641397 is 79314632.

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

It can be written as a sum of positive squares in 2 ways, for example, as 5202961 + 18438436 = 2281^2 + 4294^2 .

It is a cyclic number.

It is not a de Polignac number, because 23641397 - 2² = 23641393 is a prime.

It is a super-3 number, since 3×23641397³ (a number of 23 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a zygodrome in base 3.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23641391) 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, 909272 + ... + 909297.

It is an arithmetic number, because the mean of its divisors is an integer number (6364995).

Almost surely, 2^23641397 is an apocalyptic number.

It is an amenable number.

23641397 is a deficient number, since it is larger than the sum of its proper divisors (1818583).

23641397 is a wasteful number, since it uses less digits than its factorization.

23641397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1818582.

The product of its digits is 27216, while the sum is 35.

The square root of 23641397 is about 4862.2419725884. The cubic root of 23641397 is about 287.0060458365.

The spelling of 23641397 in words is "twenty-three million, six hundred forty-one thousand, three hundred ninety-seven".