1311530 has 16 divisors (see below), whose sum is σ = 2575584. Its totient is φ = 476880.

The previous prime is 1311523. The next prime is 1311547. The reversal of 1311530 is 351131.

It is a super-2 number, since 2×1311530² = 3440221881800, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5852 + ... + 6071.

It is an arithmetic number, because the mean of its divisors is an integer number (160974).

2^1311530 is an apocalyptic number.

1311530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1311530 is a deficient number, since it is larger than the sum of its proper divisors (1264054).

1311530 is a wasteful number, since it uses less digits than its factorization.

1311530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11941.

The product of its (nonzero) digits is 45, while the sum is 14.

The square root of 1311530 is about 1145.2205027854. The cubic root of 1311530 is about 109.4609995733.

Adding to 1311530 its reverse (351131), we get a palindrome (1662661).

It can be divided in two parts, 131 and 1530, that added together give a palindrome (1661).

The spelling of 1311530 in words is "one million, three hundred eleven thousand, five hundred thirty".