22320131 has 2 divisors, whose sum is σ = 22320132. Its totient is φ = 22320130.

The previous prime is 22320127. The next prime is 22320187. The reversal of 22320131 is 13102322.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22320131 - 2² = 22320127 is a prime.

It is a super-3 number, since 3×22320131³ (a number of 23 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not a weakly prime, because it can be changed into another prime (22320101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11160065 + 11160066.

It is an arithmetic number, because the mean of its divisors is an integer number (11160066).

Almost surely, 2^22320131 is an apocalyptic number.

22320131 is a deficient number, since it is larger than the sum of its proper divisors (1).

22320131 is an equidigital number, since it uses as much as digits as its factorization.

22320131 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 22320131 is about 4724.4185885673. The cubic root of 22320131 is about 281.5565141601.

Adding to 22320131 its reverse (13102322), we get a palindrome (35422453).

The spelling of 22320131 in words is "twenty-two million, three hundred twenty thousand, one hundred thirty-one".