23021313 has 16 divisors (see below), whose sum is σ = 36212736. Its totient is φ = 12730320.

The previous prime is 23021291. The next prime is 23021333. The reversal of 23021313 is 31312032.

It is not a de Polignac number, because 23021313 - 2⁶ = 23021249 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 23021292 and 23021301.

It is not an unprimeable number, because it can be changed into a prime (23021333) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17031 + ... + 18332.

It is an arithmetic number, because the mean of its divisors is an integer number (2263296).

Almost surely, 2^23021313 is an apocalyptic number.

It is an amenable number.

23021313 is a deficient number, since it is larger than the sum of its proper divisors (13191423).

23021313 is a wasteful number, since it uses less digits than its factorization.

23021313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35404.

The product of its (nonzero) digits is 108, while the sum is 15.

The square root of 23021313 is about 4798.0530426414. The cubic root of 23021313 is about 284.4745133833.

Adding to 23021313 its reverse (31312032), we get a palindrome (54333345).

The spelling of 23021313 in words is "twenty-three million, twenty-one thousand, three hundred thirteen".