22313131 has 2 divisors, whose sum is σ = 22313132. Its totient is φ = 22313130.

The previous prime is 22313113. The next prime is 22313153. The reversal of 22313131 is 13131322.

Together with previous prime (22313113) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22313131 - 2⁷ = 22313003 is a prime.

It is a super-3 number, since 3×22313131³ (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 (22313111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11156565 + 11156566.

It is an arithmetic number, because the mean of its divisors is an integer number (11156566).

Almost surely, 2^22313131 is an apocalyptic number.

22313131 is a deficient number, since it is larger than the sum of its proper divisors (1).

22313131 is an equidigital number, since it uses as much as digits as its factorization.

22313131 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 108, while the sum is 16.

The square root of 22313131 is about 4723.6776985734. The cubic root of 22313131 is about 281.5270773306.

Adding to 22313131 its reverse (13131322), we get a palindrome (35444453).

The spelling of 22313131 in words is "twenty-two million, three hundred thirteen thousand, one hundred thirty-one".