22294931 has 2 divisors, whose sum is σ = 22294932. Its totient is φ = 22294930.

The previous prime is 22294913. The next prime is 22294933. The reversal of 22294931 is 13949222.

Together with previous prime (22294913) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22294931 is a prime.

It is a super-2 number, since 2×22294931² = 994127896589522, which contains 22 as substring.

Together with 22294933, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (22294933) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11147465 + 11147466.

It is an arithmetic number, because the mean of its divisors is an integer number (11147466).

Almost surely, 2^22294931 is an apocalyptic number.

22294931 is a deficient number, since it is larger than the sum of its proper divisors (1).

22294931 is an equidigital number, since it uses as much as digits as its factorization.

22294931 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7776, while the sum is 32.

The square root of 22294931 is about 4721.7508405252. The cubic root of 22294931 is about 281.4505127503.

The spelling of 22294931 in words is "twenty-two million, two hundred ninety-four thousand, nine hundred thirty-one".