1123112031111 has 40 divisors (see below), whose sum is σ = 1925858689920. Its totient is φ = 638951013072.

The previous prime is 1123112031091. The next prime is 1123112031121. The reversal of 1123112031111 is 1111302113211.

1123112031111 is a `hidden beast` number, since 1 + 1 + 231 + 120 + 311 + 1 + 1 = 666.

It is not a de Polignac number, because 1123112031111 - 2⁷ = 1123112030983 is a prime.

It is a super-2 number, since 2×1123112031111² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1123112031121) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 4234281 + ... + 4491698.

It is an arithmetic number, because the mean of its divisors is an integer number (48146467248).

Almost surely, 2^{1123112031111} is an apocalyptic number.

1123112031111 is a deficient number, since it is larger than the sum of its proper divisors (802746658809).

1123112031111 is an equidigital number, since it uses as much as digits as its factorization.

1123112031111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8726225 (or 8726216 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 18.

Adding to 1123112031111 its reverse (1111302113211), we get a palindrome (2234414144322).

The spelling of 1123112031111 in words is "one trillion, one hundred twenty-three billion, one hundred twelve million, thirty-one thousand, one hundred eleven".