22131313 has 16 divisors (see below), whose sum is σ = 24053760. Its totient is φ = 20308816.

The previous prime is 22131289. The next prime is 22131397. The reversal of 22131313 is 31313122.

It is a de Polignac number, because none of the positive numbers 2^k-22131313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22131113) 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, 63606 + ... + 63952.

It is an arithmetic number, because the mean of its divisors is an integer number (1503360).

Almost surely, 2^22131313 is an apocalyptic number.

22131313 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

22131313 is a deficient number, since it is larger than the sum of its proper divisors (1922447).

22131313 is a wasteful number, since it uses less digits than its factorization.

22131313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 476.

The product of its digits is 108, while the sum is 16.

The square root of 22131313 is about 4704.3929470230. The cubic root of 22131313 is about 280.7603187475.

Adding to 22131313 its reverse (31313122), we get a palindrome (53444435).

The spelling of 22131313 in words is "twenty-two million, one hundred thirty-one thousand, three hundred thirteen".