1331413 has 4 divisors (see below), whose sum is σ = 1356588. Its totient is φ = 1306240.

The previous prime is 1331411. The next prime is 1331431. The reversal of 1331413 is 3141331.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 786769 + 544644 = 887^2 + 738^2 .

It is a cyclic number.

It is not a de Polignac number, because 1331413 - 2¹ = 1331411 is a prime.

1331413 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1331411) 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, 12508 + ... + 12613.

It is an arithmetic number, because the mean of its divisors is an integer number (339147).

2^1331413 is an apocalyptic number.

It is an amenable number.

1331413 is a deficient number, since it is larger than the sum of its proper divisors (25175).

1331413 is an equidigital number, since it uses as much as digits as its factorization.

1331413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25174.

The product of its digits is 108, while the sum is 16.

The square root of 1331413 is about 1153.8687100359. The cubic root of 1331413 is about 110.0113762339.

Adding to 1331413 its reverse (3141331), we get a palindrome (4472744).

The spelling of 1331413 in words is "one million, three hundred thirty-one thousand, four hundred thirteen".