1312344444 has 24 divisors (see below), whose sum is σ = 3242263248. Its totient is φ = 411715840.

The previous prime is 1312344443. The next prime is 1312344463. The reversal of 1312344444 is 4444432131.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1312344443) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3216327 + ... + 3216734.

It is an arithmetic number, because the mean of its divisors is an integer number (135094302).

Almost surely, 2^1312344444 is an apocalyptic number.

It is an amenable number.

1312344444 is an abundant number, since it is smaller than the sum of its proper divisors (1929918804).

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

1312344444 is a wasteful number, since it uses less digits than its factorization.

1312344444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6433085 (or 6433083 counting only the distinct ones).

The product of its digits is 18432, while the sum is 30.

The square root of 1312344444 is about 36226.2949250955. The cubic root of 1312344444 is about 1094.8365286294.

Adding to 1312344444 its reverse (4444432131), we get a palindrome (5756776575).

The spelling of 1312344444 in words is "one billion, three hundred twelve million, three hundred forty-four thousand, four hundred forty-four".