1313413444 has 36 divisors (see below), whose sum is σ = 2698765776. Its totient is φ = 557621904.

The previous prime is 1313413441. The next prime is 1313413447. The reversal of 1313413444 is 4443143131.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1313413441) and next prime (1313413447).

It is a super-2 number, since 2×1313413444² = 3450109749759882272, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is not an unprimeable number, because it can be changed into a prime (1313413441) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10342 + ... + 52285.

It is an arithmetic number, because the mean of its divisors is an integer number (74965716).

Almost surely, 2^1313413444 is an apocalyptic number.

1313413444 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1313413444 is an abundant number, since it is smaller than the sum of its proper divisors (1385352332).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1313413444 is a wasteful number, since it uses less digits than its factorization.

1313413444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62752 (or 62743 counting only the distinct ones).

The product of its digits is 6912, while the sum is 28.

The square root of 1313413444 is about 36241.0463976966. The cubic root of 1313413444 is about 1095.1337226096.

Adding to 1313413444 its reverse (4443143131), we get a palindrome (5756556575).

The spelling of 1313413444 in words is "one billion, three hundred thirteen million, four hundred thirteen thousand, four hundred forty-four".