23251993 has 2 divisors, whose sum is σ = 23251994. Its totient is φ = 23251992.

The previous prime is 23251979. The next prime is 23252027. The reversal of 23251993 is 39915232.

It is an a-pointer prime, because the next prime (23252027) can be obtained adding 23251993 to its sum of digits (34).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23068809 + 183184 = 4803^2 + 428^2 .

It is a cyclic number.

It is not a de Polignac number, because 23251993 - 2¹⁷ = 23120921 is a prime.

It is not a weakly prime, because it can be changed into another prime (23251913) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11625996 + 11625997.

It is an arithmetic number, because the mean of its divisors is an integer number (11625997).

Almost surely, 2^23251993 is an apocalyptic number.

It is an amenable number.

23251993 is a deficient number, since it is larger than the sum of its proper divisors (1).

23251993 is an equidigital number, since it uses as much as digits as its factorization.

23251993 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 14580, while the sum is 34.

The square root of 23251993 is about 4822.0320405406. The cubic root of 23251993 is about 285.4215286886.

It can be divided in two parts, 232 and 51993, that added together give a palindrome (52225).

The spelling of 23251993 in words is "twenty-three million, two hundred fifty-one thousand, nine hundred ninety-three".