1311151 has 4 divisors (see below), whose sum is σ = 1327032. Its totient is φ = 1295272.

The previous prime is 1311143. The next prime is 1311173. The reversal of 1311151 is 1511131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1511131 = 89 ⋅16979.

It is a cyclic number.

It is not a de Polignac number, because 1311151 - 2³ = 1311143 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 (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, 7816 + ... + 7981.

It is an arithmetic number, because the mean of its divisors is an integer number (331758).

2^1311151 is an apocalyptic number.

1311151 is a deficient number, since it is larger than the sum of its proper divisors (15881).

1311151 is an equidigital number, since it uses as much as digits as its factorization.

1311151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15880.

The product of its digits is 15, while the sum is 13.

The square root of 1311151 is about 1145.0550205121. The cubic root of 1311151 is about 109.4504547095.

Adding to 1311151 its reverse (1511131), we get a palindrome (2822282).

The spelling of 1311151 in words is "one million, three hundred eleven thousand, one hundred fifty-one".