22131343291 has 16 divisors (see below), whose sum is σ = 24464026944. Its totient is φ = 19914087424.

The previous prime is 22131343253. The next prime is 22131343307. The reversal of 22131343291 is 19234313122.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-22131343291 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22131340291) 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, 852495 + ... + 878071.

It is an arithmetic number, because the mean of its divisors is an integer number (1529001684).

Almost surely, 2^22131343291 is an apocalyptic number.

22131343291 is a deficient number, since it is larger than the sum of its proper divisors (2332683653).

22131343291 is a wasteful number, since it uses less digits than its factorization.

22131343291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27830.

The product of its digits is 7776, while the sum is 31.

The spelling of 22131343291 in words is "twenty-two billion, one hundred thirty-one million, three hundred forty-three thousand, two hundred ninety-one".