1311499 has 16 divisors (see below), whose sum is σ = 1617408. Its totient is φ = 1037952.

The previous prime is 1311493. The next prime is 1311503. The reversal of 1311499 is 9941131.

It is a happy number.

It is not a de Polignac number, because 1311499 - 2⁹ = 1310987 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 (1311493) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 12204 + ... + 12310.

It is an arithmetic number, because the mean of its divisors is an integer number (101088).

2^1311499 is an apocalyptic number.

1311499 is a deficient number, since it is larger than the sum of its proper divisors (305909).

1311499 is a wasteful number, since it uses less digits than its factorization.

1311499 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 234.

The product of its digits is 972, while the sum is 28.

The square root of 1311499 is about 1145.2069681940. The cubic root of 1311499 is about 109.4601371409.

The spelling of 1311499 in words is "one million, three hundred eleven thousand, four hundred ninety-nine".