1331156 has 12 divisors (see below), whose sum is σ = 2364768. Its totient is φ = 655512.

The previous prime is 1331153. The next prime is 1331207. The reversal of 1331156 is 6511331.

It is a happy number.

It is a super-3 number, since 3×1331156³ = 7076330636176333248, which contains 333 as substring.

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 (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2216 + ... + 2751.

It is an arithmetic number, because the mean of its divisors is an integer number (197064).

2^1331156 is an apocalyptic number.

It is an amenable number.

1331156 is a deficient number, since it is larger than the sum of its proper divisors (1033612).

1331156 is a wasteful number, since it uses less digits than its factorization.

1331156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5038 (or 5036 counting only the distinct ones).

The product of its digits is 270, while the sum is 20.

The square root of 1331156 is about 1153.7573401717. The cubic root of 1331156 is about 110.0042973528.

Adding to 1331156 its reverse (6511331), we get a palindrome (7842487).

The spelling of 1331156 in words is "one million, three hundred thirty-one thousand, one hundred fifty-six".