22312316 has 12 divisors (see below), whose sum is σ = 42050232. Its totient is φ = 10297968.

The previous prime is 22312307. The next prime is 22312319. The reversal of 22312316 is 61321322.

It is a happy number.

It is a super-3 number, since 3×22312316³ (a number of 23 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22312319) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 214490 + ... + 214593.

It is an arithmetic number, because the mean of its divisors is an integer number (3504186).

Almost surely, 2^22312316 is an apocalyptic number.

22312316 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

22312316 is a deficient number, since it is larger than the sum of its proper divisors (19737916).

22312316 is a wasteful number, since it uses less digits than its factorization.

22312316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 429100 (or 429098 counting only the distinct ones).

The product of its digits is 432, while the sum is 20.

The square root of 22312316 is about 4723.5914302573. The cubic root of 22312316 is about 281.5236496425.

Adding to 22312316 its reverse (61321322), we get a palindrome (83633638).

The spelling of 22312316 in words is "twenty-two million, three hundred twelve thousand, three hundred sixteen".