1312044330 has 64 divisors (see below), whose sum is σ = 3200508288. Its totient is φ = 344171520.

The previous prime is 1312044323. The next prime is 1312044359. The reversal of 1312044330 is 334402131.

It is a junction number, because it is equal to n+sod(n) for n = 1312044297 and 1312044306.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1350745 + ... + 1351715.

It is an arithmetic number, because the mean of its divisors is an integer number (50007942).

Almost surely, 2^1312044330 is an apocalyptic number.

1312044330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1312044330, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1600254144).

1312044330 is an abundant number, since it is smaller than the sum of its proper divisors (1888463958).

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

1312044330 is a wasteful number, since it uses less digits than its factorization.

1312044330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1671.

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 1312044330 is about 36222.1524760746. The cubic root of 1312044330 is about 1094.7530645609.

Adding to 1312044330 its reverse (334402131), we get a palindrome (1646446461).

The spelling of 1312044330 in words is "one billion, three hundred twelve million, forty-four thousand, three hundred thirty".