1131291129 has 8 divisors (see below), whose sum is σ = 1597116960. Its totient is φ = 709829696.

The previous prime is 1131291101. The next prime is 1131291143. The reversal of 1131291129 is 9211921311.

1131291129 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1131291129 - 2⁵ = 1131291097 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1131291096 and 1131291105.

It is not an unprimeable number, because it can be changed into a prime (1131291149) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11091039 + ... + 11091140.

It is an arithmetic number, because the mean of its divisors is an integer number (199639620).

Almost surely, 2^1131291129 is an apocalyptic number.

It is an amenable number.

1131291129 is a deficient number, since it is larger than the sum of its proper divisors (465825831).

1131291129 is a wasteful number, since it uses less digits than its factorization.

1131291129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22182199.

The product of its digits is 972, while the sum is 30.

The square root of 1131291129 is about 33634.6715310258. The cubic root of 1131291129 is about 1041.9769868174.

The spelling of 1131291129 in words is "one billion, one hundred thirty-one million, two hundred ninety-one thousand, one hundred twenty-nine".