23311216 has 20 divisors (see below), whose sum is σ = 47822832. Its totient is φ = 10969856.

The previous prime is 23311193. The next prime is 23311219. The reversal of 23311216 is 61211332.

It is a junction number, because it is equal to n+sod(n) for n = 23311193 and 23311202.

It is a congruent 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, 42580 + ... + 43123.

Almost surely, 2^23311216 is an apocalyptic number.

It is an amenable number.

23311216 is an abundant number, since it is smaller than the sum of its proper divisors (24511616).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

23311216 is a wasteful number, since it uses less digits than its factorization.

23311216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85728 (or 85722 counting only the distinct ones).

The product of its digits is 216, while the sum is 19.

The square root of 23311216 is about 4828.1690111263. The cubic root of 23311216 is about 285.6636468350.

Adding to 23311216 its reverse (61211332), we get a palindrome (84522548).

It can be divided in two parts, 233 and 11216, that added together give a square (11449 = 107²).

The spelling of 23311216 in words is "twenty-three million, three hundred eleven thousand, two hundred sixteen".