1313001444 has 12 divisors (see below), whose sum is σ = 3063670064. Its totient is φ = 437667144.

The previous prime is 1313001439. The next prime is 1313001449. The reversal of 1313001444 is 4441003131.

It is an interprime number because it is at equal distance from previous prime (1313001439) and next prime (1313001449).

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 1313001444.

It is not an unprimeable number, because it can be changed into a prime (1313001449) 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, 54708382 + ... + 54708405.

Almost surely, 2^1313001444 is an apocalyptic number.

It is an amenable number.

1313001444 is an abundant number, since it is smaller than the sum of its proper divisors (1750668620).

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

1313001444 is a wasteful number, since it uses less digits than its factorization.

1313001444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109416794 (or 109416792 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 1313001444 is about 36235.3617892798. The cubic root of 1313001444 is about 1095.0192010978.

Adding to 1313001444 its reverse (4441003131), we get a palindrome (5754004575).

The spelling of 1313001444 in words is "one billion, three hundred thirteen million, one thousand, four hundred forty-four".