1123111243131 has 16 divisors (see below), whose sum is σ = 1585966586400. Its totient is φ = 704520462848.

The previous prime is 1123111243087. The next prime is 1123111243183. The reversal of 1123111243131 is 1313421113211.

It is a cyclic number.

It is not a de Polignac number, because 1123111243131 - 2¹⁴ = 1123111226747 is a prime.

It is a super-2 number, since 2×1123111243131² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1123111243831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2556876 + ... + 2963753.

It is an arithmetic number, because the mean of its divisors is an integer number (99122911650).

Almost surely, 2^{1123111243131} is an apocalyptic number.

1123111243131 is a deficient number, since it is larger than the sum of its proper divisors (462855343269).

1123111243131 is a wasteful number, since it uses less digits than its factorization.

1123111243131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5524638.

The product of its digits is 432, while the sum is 24.

Adding to 1123111243131 its reverse (1313421113211), we get a palindrome (2436532356342).

The spelling of 1123111243131 in words is "one trillion, one hundred twenty-three billion, one hundred eleven million, two hundred forty-three thousand, one hundred thirty-one".