1312132224 has 96 divisors (see below), whose sum is σ = 3774265200. Its totient is φ = 403713024.

The previous prime is 1312132219. The next prime is 1312132271. The reversal of 1312132224 is 4222312131.

It is a tau number, because it is divible by the number of its divisors (96).

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

It is a self number, because there is not a number n which added to its sum of digits gives 1312132224.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 54787 + ... + 75005.

Almost surely, 2^1312132224 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1312132224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1887132600).

1312132224 is an abundant number, since it is smaller than the sum of its proper divisors (2462132976).

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

1312132224 is a wasteful number, since it uses less digits than its factorization.

1312132224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20262 (or 20237 counting only the distinct ones).

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

The square root of 1312132224 is about 36223.3657188285. The cubic root of 1312132224 is about 1094.7775098927. Note that the first 3 decimals are identical.

Adding to 1312132224 its reverse (4222312131), we get a palindrome (5534444355).

The spelling of 1312132224 in words is "one billion, three hundred twelve million, one hundred thirty-two thousand, two hundred twenty-four".