1331129 has 8 divisors (see below), whose sum is σ = 1389960. Its totient is φ = 1273216.

The previous prime is 1331123. The next prime is 1331153. The reversal of 1331129 is 9211331.

It can be written as a sum of positive squares in 4 ways, for example, as 384400 + 946729 = 620^2 + 973^2 .

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

It is not a de Polignac number, because 1331129 - 2⁸ = 1330873 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1331129.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1331123) 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, 5597 + ... + 5829.

It is an arithmetic number, because the mean of its divisors is an integer number (173745).

2^1331129 is an apocalyptic number.

It is an amenable number.

1331129 is a deficient number, since it is larger than the sum of its proper divisors (58831).

1331129 is a wasteful number, since it uses less digits than its factorization.

1331129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 459.

The product of its digits is 162, while the sum is 20.

The square root of 1331129 is about 1153.7456392117. The cubic root of 1331129 is about 110.0035536042.

The spelling of 1331129 in words is "one million, three hundred thirty-one thousand, one hundred twenty-nine".