23311345 has 4 divisors (see below), whose sum is σ = 27973620. Its totient is φ = 18649072.

The previous prime is 23311307. The next prime is 23311357. The reversal of 23311345 is 54311332.

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

It can be written as a sum of positive squares in 2 ways, for example, as 6411024 + 16900321 = 2532^2 + 4111^2 .

It is a cyclic number.

It is not a de Polignac number, because 23311345 - 2¹⁷ = 23180273 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2331130 + ... + 2331139.

It is an arithmetic number, because the mean of its divisors is an integer number (6993405).

Almost surely, 2^23311345 is an apocalyptic number.

It is an amenable number.

23311345 is a deficient number, since it is larger than the sum of its proper divisors (4662275).

23311345 is an equidigital number, since it uses as much as digits as its factorization.

23311345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4662274.

The product of its digits is 1080, while the sum is 22.

The square root of 23311345 is about 4828.1823702093. The cubic root of 23311345 is about 285.6641737708.

Adding to 23311345 its reverse (54311332), we get a palindrome (77622677).

The spelling of 23311345 in words is "twenty-three million, three hundred eleven thousand, three hundred forty-five".