1331159 has 4 divisors (see below), whose sum is σ = 1401240. Its totient is φ = 1261080.

The previous prime is 1331153. The next prime is 1331207. The reversal of 1331159 is 9511331.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1331159 - 2¹² = 1327063 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1331153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35012 + ... + 35049.

It is an arithmetic number, because the mean of its divisors is an integer number (350310).

2^1331159 is an apocalyptic number.

1331159 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

1331159 is a deficient number, since it is larger than the sum of its proper divisors (70081).

1331159 is an equidigital number, since it uses as much as digits as its factorization.

1331159 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70080.

The product of its digits is 405, while the sum is 23.

The square root of 1331159 is about 1153.7586402710. The cubic root of 1331159 is about 110.0043799909.

The spelling of 1331159 in words is "one million, three hundred thirty-one thousand, one hundred fifty-nine".