1131020013023 has 4 divisors (see below), whose sum is σ = 1131032919240. Its totient is φ = 1131007106808.

The previous prime is 1131020013007. The next prime is 1131020013031. The reversal of 1131020013023 is 3203100201311.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1131020013023 - 2⁴ = 1131020013007 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1131020012992 and 1131020013010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1131020013073) 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 3 ways as a sum of consecutive naturals, for example, 6320753 + ... + 6497226.

It is an arithmetic number, because the mean of its divisors is an integer number (282758229810).

Almost surely, 2^{1131020013023} is an apocalyptic number.

1131020013023 is a deficient number, since it is larger than the sum of its proper divisors (12906217).

1131020013023 is an equidigital number, since it uses as much as digits as its factorization.

1131020013023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12906216.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 1131020013023 its reverse (3203100201311), we get a palindrome (4334120214334).

The spelling of 1131020013023 in words is "one trillion, one hundred thirty-one billion, twenty million, thirteen thousand, twenty-three".