23135801 has 4 divisors (see below), whose sum is σ = 24915492. Its totient is φ = 21356112.

The previous prime is 23135789. The next prime is 23135803. The reversal of 23135801 is 10853132.

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 15840400 + 7295401 = 3980^2 + 2701^2 .

It is a cyclic number.

It is not a de Polignac number, because 23135801 - 2⁶ = 23135737 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23135803) 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, 889826 + ... + 889851.

It is an arithmetic number, because the mean of its divisors is an integer number (6228873).

Almost surely, 2^23135801 is an apocalyptic number.

It is an amenable number.

23135801 is a deficient number, since it is larger than the sum of its proper divisors (1779691).

23135801 is a wasteful number, since it uses less digits than its factorization.

23135801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1779690.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 23135801 is about 4809.9689188185. The cubic root of 23135801 is about 284.9453101175.

Adding to 23135801 its reverse (10853132), we get a palindrome (33988933).

The spelling of 23135801 in words is "twenty-three million, one hundred thirty-five thousand, eight hundred one".