23216613 has 32 divisors (see below), whose sum is σ = 38461440. Its totient is φ = 12156480.

The previous prime is 23216593. The next prime is 23216621. The reversal of 23216613 is 31661232.

It is a happy number.

It is not a de Polignac number, because 23216613 - 2⁵ = 23216581 is a prime.

It is a super-2 number, since 2×23216613² = 1078022238383538, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23216663) 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 in 31 ways as a sum of consecutive naturals, for example, 11431 + ... + 13307.

It is an arithmetic number, because the mean of its divisors is an integer number (1201920).

Almost surely, 2^23216613 is an apocalyptic number.

It is an amenable number.

23216613 is a deficient number, since it is larger than the sum of its proper divisors (15244827).

23216613 is a wasteful number, since it uses less digits than its factorization.

23216613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1937.

The product of its digits is 1296, while the sum is 24.

The square root of 23216613 is about 4818.3620660967. The cubic root of 23216613 is about 285.2766903544.

Adding to 23216613 its reverse (31661232), we get a palindrome (54877845).

The spelling of 23216613 in words is "twenty-three million, two hundred sixteen thousand, six hundred thirteen".