11310031123 has 16 divisors (see below), whose sum is σ = 11690917056. Its totient is φ = 10937364480.

The previous prime is 11310031121. The next prime is 11310031127. The reversal of 11310031123 is 32113001311.

It is a cyclic number.

It is not a de Polignac number, because 11310031123 - 2¹ = 11310031121 is a prime.

It is a super-2 number, since 2×11310031123² (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 = 11310031097 and 11310031106.

It is not an unprimeable number, because it can be changed into a prime (11310031121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 770965 + ... + 785497.

It is an arithmetic number, because the mean of its divisors is an integer number (730682316).

Almost surely, 2^11310031123 is an apocalyptic number.

11310031123 is a deficient number, since it is larger than the sum of its proper divisors (380885933).

11310031123 is a wasteful number, since it uses less digits than its factorization.

11310031123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14814.

The product of its (nonzero) digits is 54, while the sum is 16.

Adding to 11310031123 its reverse (32113001311), we get a palindrome (43423032434).

The spelling of 11310031123 in words is "eleven billion, three hundred ten million, thirty-one thousand, one hundred twenty-three".