23321331251 has 2 divisors, whose sum is σ = 23321331252. Its totient is φ = 23321331250.

The previous prime is 23321331197. The next prime is 23321331277. The reversal of 23321331251 is 15213312332.

It is an a-pointer prime, because the next prime (23321331277) can be obtained adding 23321331251 to its sum of digits (26).

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23321331251 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 23321331251.

It is not a weakly prime, because it can be changed into another prime (23321331281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11660665625 + 11660665626.

It is an arithmetic number, because the mean of its divisors is an integer number (11660665626).

Almost surely, 2^23321331251 is an apocalyptic number.

23321331251 is a deficient number, since it is larger than the sum of its proper divisors (1).

23321331251 is an equidigital number, since it uses as much as digits as its factorization.

23321331251 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3240, while the sum is 26.

Adding to 23321331251 its reverse (15213312332), we get a palindrome (38534643583).

The spelling of 23321331251 in words is "twenty-three billion, three hundred twenty-one million, three hundred thirty-one thousand, two hundred fifty-one".