1131081283 has 4 divisors (see below), whose sum is σ = 1167567808. Its totient is φ = 1094594760.

The previous prime is 1131081269. The next prime is 1131081293. The reversal of 1131081283 is 3821801311.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3821801311 = 23609 ⋅161879.

It is a cyclic number.

It is not a de Polignac number, because 1131081283 - 2⁵ = 1131081251 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1131081233) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18243216 + ... + 18243277.

It is an arithmetic number, because the mean of its divisors is an integer number (291891952).

Almost surely, 2^1131081283 is an apocalyptic number.

1131081283 is a deficient number, since it is larger than the sum of its proper divisors (36486525).

1131081283 is an equidigital number, since it uses as much as digits as its factorization.

1131081283 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36486524.

The product of its (nonzero) digits is 1152, while the sum is 28.

The square root of 1131081283 is about 33631.5518969910. The cubic root of 1131081283 is about 1041.9125565341.

Adding to 1131081283 its reverse (3821801311), we get a palindrome (4952882594).

The spelling of 1131081283 in words is "one billion, one hundred thirty-one million, eighty-one thousand, two hundred eighty-three".