1131013023 has 16 divisors (see below), whose sum is σ = 1723933440. Its totient is φ = 646111296.

The previous prime is 1131013001. The next prime is 1131013061. The reversal of 1131013023 is 3203101311.

It is not a de Polignac number, because 1131013023 - 2²⁸ = 862577567 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1131012993 and 1131013011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1131013073) 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, 114736 + ... + 124202.

It is an arithmetic number, because the mean of its divisors is an integer number (107745840).

Almost surely, 2^1131013023 is an apocalyptic number.

1131013023 is a deficient number, since it is larger than the sum of its proper divisors (592920417).

1131013023 is an equidigital number, since it uses as much as digits as its factorization.

1131013023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15166.

The product of its (nonzero) digits is 54, while the sum is 15.

The square root of 1131013023 is about 33630.5370608321. The cubic root of 1131013023 is about 1041.8915965368.

Adding to 1131013023 its reverse (3203101311), we get a palindrome (4334114334).

The spelling of 1131013023 in words is "one billion, one hundred thirty-one million, thirteen thousand, twenty-three".