23051040251 has 4 divisors (see below), whose sum is σ = 23071458600. Its totient is φ = 23030621904.

The previous prime is 23051040247. The next prime is 23051040277. The reversal of 23051040251 is 15204015032.

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 23051040251 - 2² = 23051040247 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23051040451) 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, 10207481 + ... + 10209738.

It is an arithmetic number, because the mean of its divisors is an integer number (5767864650).

Almost surely, 2^23051040251 is an apocalyptic number.

23051040251 is a deficient number, since it is larger than the sum of its proper divisors (20418349).

23051040251 is a wasteful number, since it uses less digits than its factorization.

23051040251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20418348.

The product of its (nonzero) digits is 1200, while the sum is 23.

Adding to 23051040251 its reverse (15204015032), we get a palindrome (38255055283).

The spelling of 23051040251 in words is "twenty-three billion, fifty-one million, forty thousand, two hundred fifty-one".