1131013019 has 4 divisors (see below), whose sum is σ = 1190540040. Its totient is φ = 1071486000.

The previous prime is 1131013001. The next prime is 1131013061. The reversal of 1131013019 is 9103101311.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9103101311 = 25639 ⋅355049.

It is not a de Polignac number, because 1131013019 - 2⁸ = 1131012763 is a prime.

It is a super-2 number, since 2×1131013019² = 2558380898294988722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1131013619) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29763482 + ... + 29763519.

It is an arithmetic number, because the mean of its divisors is an integer number (297635010).

Almost surely, 2^1131013019 is an apocalyptic number.

1131013019 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

1131013019 is a deficient number, since it is larger than the sum of its proper divisors (59527021).

1131013019 is an equidigital number, since it uses as much as digits as its factorization.

1131013019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59527020.

The product of its (nonzero) digits is 81, while the sum is 20.

The square root of 1131013019 is about 33630.5370013623. The cubic root of 1131013019 is about 1041.8915953086.

The spelling of 1131013019 in words is "one billion, one hundred thirty-one million, thirteen thousand, nineteen".