23311249 has 4 divisors (see below), whose sum is σ = 25104436. Its totient is φ = 21518064.

The previous prime is 23311237. The next prime is 23311261. The reversal of 23311249 is 94211332.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (23311237) and next prime (23311261).

It can be written as a sum of positive squares in 2 ways, for example, as 10758400 + 12552849 = 3280^2 + 3543^2 .

It is a cyclic number.

It is not a de Polignac number, because 23311249 - 2⁹ = 23310737 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23311219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 896574 + ... + 896599.

It is an arithmetic number, because the mean of its divisors is an integer number (6276109).

Almost surely, 2^23311249 is an apocalyptic number.

It is an amenable number.

23311249 is a deficient number, since it is larger than the sum of its proper divisors (1793187).

23311249 is a wasteful number, since it uses less digits than its factorization.

23311249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1793186.

The product of its digits is 1296, while the sum is 25.

The square root of 23311249 is about 4828.1724285696. The cubic root of 23311249 is about 285.6637816327.

The spelling of 23311249 in words is "twenty-three million, three hundred eleven thousand, two hundred forty-nine".