1131023113031 has 16 divisors (see below), whose sum is σ = 1299674534400. Its totient is φ = 964155352608.

The previous prime is 1131023113027. The next prime is 1131023113039. The reversal of 1131023113031 is 1303113201311.

It is not a de Polignac number, because 1131023113031 - 2² = 1131023113027 is a prime.

It is a super-2 number, since 2×1131023113031² (a number of 25 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 = 1131023112994 and 1131023113012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1131023113039) 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, 334040 + ... + 1540658.

It is an arithmetic number, because the mean of its divisors is an integer number (81229658400).

Almost surely, 2^{1131023113031} is an apocalyptic number.

1131023113031 is a deficient number, since it is larger than the sum of its proper divisors (168651421369).

1131023113031 is a wasteful number, since it uses less digits than its factorization.

1131023113031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1207358.

The product of its (nonzero) digits is 162, while the sum is 20.

Adding to 1131023113031 its reverse (1303113201311), we get a palindrome (2434136314342).

The spelling of 1131023113031 in words is "one trillion, one hundred thirty-one billion, twenty-three million, one hundred thirteen thousand, thirty-one".