1313438 has 16 divisors (see below), whose sum is σ = 2350080. Its totient is φ = 538296.

The previous prime is 1313423. The next prime is 1313443. The reversal of 1313438 is 8343131.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1718 + ... + 2361.

It is an arithmetic number, because the mean of its divisors is an integer number (146880).

2^1313438 is an apocalyptic number.

1313438 is a deficient number, since it is larger than the sum of its proper divisors (1036642).

1313438 is a wasteful number, since it uses less digits than its factorization.

1313438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4111.

The product of its digits is 864, while the sum is 23.

The square root of 1313438 is about 1146.0532273852. The cubic root of 1313438 is about 109.5140547558.

Adding to 1313438 its reverse (8343131), we get a palindrome (9656569).

The spelling of 1313438 in words is "one million, three hundred thirteen thousand, four hundred thirty-eight".