11122423031 has 4 divisors (see below), whose sum is σ = 11183873064. Its totient is φ = 11060973000.

The previous prime is 11122423003. The next prime is 11122423049. The reversal of 11122423031 is 13032422111.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11122423031 is a prime.

It is a super-2 number, since 2×11122423031² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11122422994 and 11122423012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11122423531) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30724745 + ... + 30725106.

It is an arithmetic number, because the mean of its divisors is an integer number (2795968266).

Almost surely, 2^11122423031 is an apocalyptic number.

11122423031 is a deficient number, since it is larger than the sum of its proper divisors (61450033).

11122423031 is an equidigital number, since it uses as much as digits as its factorization.

11122423031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61450032.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 11122423031 its reverse (13032422111), we get a palindrome (24154845142).

The spelling of 11122423031 in words is "eleven billion, one hundred twenty-two million, four hundred twenty-three thousand, thirty-one".