1131111023031 has 32 divisors (see below), whose sum is σ = 1837629296640. Its totient is φ = 681932678400.

The previous prime is 1131111022981. The next prime is 1131111023057. The reversal of 1131111023031 is 1303201111311.

1131111023031 is a `hidden beast` number, since 11 + 311 + 110 + 230 + 3 + 1 = 666.

It is not a de Polignac number, because 1131111023031 - 2¹⁴ = 1131111006647 is a prime.

It is a super-2 number, since 2×1131111023031² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1131111022995 and 1131111023013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1131111023131) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9913050 + ... + 10026503.

It is an arithmetic number, because the mean of its divisors is an integer number (57425915520).

Almost surely, 2^{1131111023031} is an apocalyptic number.

1131111023031 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1131111023031 is a deficient number, since it is larger than the sum of its proper divisors (706518273609).

1131111023031 is a wasteful number, since it uses less digits than its factorization.

1131111023031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19939764 (or 19939758 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 18.

Adding to 1131111023031 its reverse (1303201111311), we get a palindrome (2434312134342).

The spelling of 1131111023031 in words is "one trillion, one hundred thirty-one billion, one hundred eleven million, twenty-three thousand, thirty-one".