1131328429 has 16 divisors (see below), whose sum is σ = 1427489280. Its totient is φ = 870928560.

The previous prime is 1131328417. The next prime is 1131328489. The reversal of 1131328429 is 9248231311.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1131328429 - 2¹¹ = 1131326381 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1131328394 and 1131328403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1131328489) 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, 82119 + ... + 94900.

It is an arithmetic number, because the mean of its divisors is an integer number (89218080).

Almost surely, 2^1131328429 is an apocalyptic number.

It is an amenable number.

1131328429 is a deficient number, since it is larger than the sum of its proper divisors (296160851).

1131328429 is a wasteful number, since it uses less digits than its factorization.

1131328429 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 177120.

The product of its digits is 10368, while the sum is 34.

The square root of 1131328429 is about 33635.2260138088. The cubic root of 1131328429 is about 1041.9884384274.

The spelling of 1131328429 in words is "one billion, one hundred thirty-one million, three hundred twenty-eight thousand, four hundred twenty-nine".