1311137 has 4 divisors (see below), whose sum is σ = 1313556. Its totient is φ = 1308720.

The previous prime is 1311131. The next prime is 1311143. The reversal of 1311137 is 7311131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7311131 = 419 ⋅17449.

It is an interprime number because it is at equal distance from previous prime (1311131) and next prime (1311143).

It can be written as a sum of positive squares in 2 ways, for example, as 309136 + 1002001 = 556^2 + 1001^2 .

It is a cyclic number.

It is not a de Polignac number, because 1311137 - 2¹⁴ = 1294753 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1311131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23 + ... + 1619.

It is an arithmetic number, because the mean of its divisors is an integer number (328389).

2^1311137 is an apocalyptic number.

It is an amenable number.

1311137 is a deficient number, since it is larger than the sum of its proper divisors (2419).

1311137 is an equidigital number, since it uses as much as digits as its factorization.

1311137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2418.

The product of its digits is 63, while the sum is 17.

The square root of 1311137 is about 1145.0489072524. The cubic root of 1311137 is about 109.4500651505.

Adding to 1311137 its reverse (7311131), we get a palindrome (8622268).

The spelling of 1311137 in words is "one million, three hundred eleven thousand, one hundred thirty-seven".