22327931 has 2 divisors, whose sum is σ = 22327932. Its totient is φ = 22327930.

The previous prime is 22327889. The next prime is 22327933. The reversal of 22327931 is 13972322.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22327931 - 2¹⁰ = 22326907 is a prime.

It is a super-3 number, since 3×22327931³ (a number of 23 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

Together with 22327933, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 22327894 and 22327903.

It is not a weakly prime, because it can be changed into another prime (22327933) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11163965 + 11163966.

It is an arithmetic number, because the mean of its divisors is an integer number (11163966).

Almost surely, 2^22327931 is an apocalyptic number.

22327931 is a deficient number, since it is larger than the sum of its proper divisors (1).

22327931 is an equidigital number, since it uses as much as digits as its factorization.

22327931 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4536, while the sum is 29.

The square root of 22327931 is about 4725.2440148631. The cubic root of 22327931 is about 281.5893079497.

The spelling of 22327931 in words is "twenty-two million, three hundred twenty-seven thousand, nine hundred thirty-one".