23240313 has 6 divisors (see below), whose sum is σ = 33569354. Its totient is φ = 15493536.

The previous prime is 23240291. The next prime is 23240381. The reversal of 23240313 is 31304232.

It can be written as a sum of positive squares in only one way, i.e., 22014864 + 1225449 = 4692^2 + 1107^2 .

It is not a de Polignac number, because 23240313 - 2²⁰ = 22191737 is a prime.

It is a super-2 number, since 2×23240313² = 1080224296675938, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23240213) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1291120 + ... + 1291137.

Almost surely, 2^23240313 is an apocalyptic number.

It is an amenable number.

23240313 is a deficient number, since it is larger than the sum of its proper divisors (10329041).

23240313 is a wasteful number, since it uses less digits than its factorization.

23240313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2582263 (or 2582260 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

The square root of 23240313 is about 4820.8207807385. The cubic root of 23240313 is about 285.3737294625.

Adding to 23240313 its reverse (31304232), we get a palindrome (54544545).

The spelling of 23240313 in words is "twenty-three million, two hundred forty thousand, three hundred thirteen".