1123223112031 has 2 divisors, whose sum is σ = 1123223112032. Its totient is φ = 1123223112030.

The previous prime is 1123223112023. The next prime is 1123223112091. The reversal of 1123223112031 is 1302113223211.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1123223112031 - 2³ = 1123223112023 is a prime.

It is a super-2 number, since 2×1123223112031² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1123223111993 and 1123223112011.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1123223112091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 561611556015 + 561611556016.

It is an arithmetic number, because the mean of its divisors is an integer number (561611556016).

Almost surely, 2^{1123223112031} is an apocalyptic number.

1123223112031 is a deficient number, since it is larger than the sum of its proper divisors (1).

1123223112031 is an equidigital number, since it uses as much as digits as its factorization.

1123223112031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 1123223112031 its reverse (1302113223211), we get a palindrome (2425336335242).

The spelling of 1123223112031 in words is "one trillion, one hundred twenty-three billion, two hundred twenty-three million, one hundred twelve thousand, thirty-one".