22031231313 has 64 divisors (see below), whose sum is σ = 36510566400. Its totient is φ = 11506682880.

The previous prime is 22031231293. The next prime is 22031231317. The reversal of 22031231313 is 31313213022.

It is not a de Polignac number, because 22031231313 - 2¹⁰ = 22031230289 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 22031231313.

It is not an unprimeable number, because it can be changed into a prime (22031231317) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 25006633 + ... + 25007513.

It is an arithmetic number, because the mean of its divisors is an integer number (570477600).

Almost surely, 2^22031231313 is an apocalyptic number.

It is an amenable number.

22031231313 is a deficient number, since it is larger than the sum of its proper divisors (14479335087).

22031231313 is a wasteful number, since it uses less digits than its factorization.

22031231313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1702.

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 22031231313 its reverse (31313213022), we get a palindrome (53344444335).

The spelling of 22031231313 in words is "twenty-two billion, thirty-one million, two hundred thirty-one thousand, three hundred thirteen".