23230005251 has 4 divisors (see below), whose sum is σ = 23364282912. Its totient is φ = 23095727592.

The previous prime is 23230005247. The next prime is 23230005263. The reversal of 23230005251 is 15250003232.

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 23230005251 - 2² = 23230005247 is a prime.

It is a super-2 number, since 2×23230005251² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23230005551) 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, 67138571 + ... + 67138916.

It is an arithmetic number, because the mean of its divisors is an integer number (5841070728).

Almost surely, 2^23230005251 is an apocalyptic number.

23230005251 is a deficient number, since it is larger than the sum of its proper divisors (134277661).

23230005251 is a wasteful number, since it uses less digits than its factorization.

23230005251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134277660.

The product of its (nonzero) digits is 1800, while the sum is 23.

Adding to 23230005251 its reverse (15250003232), we get a palindrome (38480008483).

The spelling of 23230005251 in words is "twenty-three billion, two hundred thirty million, five thousand, two hundred fifty-one".