23211233251 has 2 divisors, whose sum is σ = 23211233252. Its totient is φ = 23211233250.

The previous prime is 23211233249. The next prime is 23211233267. The reversal of 23211233251 is 15233211232.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 23211233251 - 2¹ = 23211233249 is a prime.

It is a super-2 number, since 2×23211233251² (a number of 22 digits) contains 22 as substring.

Together with 23211233249, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (23211239251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11605616625 + 11605616626.

It is an arithmetic number, because the mean of its divisors is an integer number (11605616626).

Almost surely, 2^23211233251 is an apocalyptic number.

23211233251 is a deficient number, since it is larger than the sum of its proper divisors (1).

23211233251 is an equidigital number, since it uses as much as digits as its factorization.

23211233251 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2160, while the sum is 25.

Adding to 23211233251 its reverse (15233211232), we get a palindrome (38444444483).

The spelling of 23211233251 in words is "twenty-three billion, two hundred eleven million, two hundred thirty-three thousand, two hundred fifty-one".