1131113529 has 48 divisors (see below), whose sum is σ = 2116732800. Its totient is φ = 565221888.

The previous prime is 1131113519. The next prime is 1131113539. The reversal of 1131113529 is 9253111311.

It is a happy number.

1131113529 is a `hidden beast` number, since 1 + 131 + 1 + 1 + 3 + 529 = 666.

1131113529 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (1131113519) and next prime (1131113539).

It is not a de Polignac number, because 1131113529 - 2⁹ = 1131113017 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1131113509) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 20784 + ... + 51905.

It is an arithmetic number, because the mean of its divisors is an integer number (44098600).

Almost surely, 2^1131113529 is an apocalyptic number.

1131113529 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

1131113529 is a deficient number, since it is larger than the sum of its proper divisors (985619271).

1131113529 is a wasteful number, since it uses less digits than its factorization.

1131113529 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72734 (or 72731 counting only the distinct ones).

The product of its digits is 810, while the sum is 27.

The square root of 1131113529 is about 33632.0312945858. The cubic root of 1131113529 is about 1041.9224577362.

The spelling of 1131113529 in words is "one billion, one hundred thirty-one million, one hundred thirteen thousand, five hundred twenty-nine".