22231531123 has 2 divisors, whose sum is σ = 22231531124. Its totient is φ = 22231531122.

The previous prime is 22231531081. The next prime is 22231531151. The reversal of 22231531123 is 32113513222.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22231531123 is a prime.

It is a super-2 number, since 2×22231531123² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (22231532123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11115765561 + 11115765562.

It is an arithmetic number, because the mean of its divisors is an integer number (11115765562).

Almost surely, 2^22231531123 is an apocalyptic number.

22231531123 is a deficient number, since it is larger than the sum of its proper divisors (1).

22231531123 is an equidigital number, since it uses as much as digits as its factorization.

22231531123 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2160, while the sum is 25.

The spelling of 22231531123 in words is "twenty-two billion, two hundred thirty-one million, five hundred thirty-one thousand, one hundred twenty-three".