1331157 has 8 divisors (see below), whose sum is σ = 1786176. Its totient is φ = 881792.

The previous prime is 1331153. The next prime is 1331207. The reversal of 1331157 is 7511331.

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

It is a cyclic number.

It is not a de Polignac number, because 1331157 - 2² = 1331153 is a prime.

1331157 is a lucky 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 polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 828 + ... + 1829.

It is an arithmetic number, because the mean of its divisors is an integer number (223272).

2^1331157 is an apocalyptic number.

It is an amenable number.

1331157 is a deficient number, since it is larger than the sum of its proper divisors (455019).

1331157 is a wasteful number, since it uses less digits than its factorization.

1331157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2827.

The product of its digits is 315, while the sum is 21.

The square root of 1331157 is about 1153.7577735383. The cubic root of 1331157 is about 110.0043248988.

Adding to 1331157 its reverse (7511331), we get a palindrome (8842488).

The spelling of 1331157 in words is "one million, three hundred thirty-one thousand, one hundred fifty-seven".