23210251 has 2 divisors, whose sum is σ = 23210252. Its totient is φ = 23210250.

The previous prime is 23210249. The next prime is 23210263. The reversal of 23210251 is 15201232.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 23210251 - 2¹ = 23210249 is a prime.

Together with 23210249, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (23216251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11605125 + 11605126.

It is an arithmetic number, because the mean of its divisors is an integer number (11605126).

Almost surely, 2^23210251 is an apocalyptic number.

23210251 is a deficient number, since it is larger than the sum of its proper divisors (1).

23210251 is an equidigital number, since it uses as much as digits as its factorization.

23210251 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 23210251 is about 4817.7018380136. The cubic root of 23210251 is about 285.2506300485.

Adding to 23210251 its reverse (15201232), we get a palindrome (38411483).

The spelling of 23210251 in words is "twenty-three million, two hundred ten thousand, two hundred fifty-one".