1321443234 has 96 divisors (see below), whose sum is σ = 3122159040. Its totient is φ = 418364352.

The previous prime is 1321443209. The next prime is 1321443251. The reversal of 1321443234 is 4323441231.

1321443234 is a `hidden beast` number, since 13 + 214 + 432 + 3 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 1321443198 and 1321443207.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 772372 + ... + 774080.

It is an arithmetic number, because the mean of its divisors is an integer number (32522490).

Almost surely, 2^1321443234 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1321443234, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1561079520).

1321443234 is an abundant number, since it is smaller than the sum of its proper divisors (1800715806).

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

1321443234 is a wasteful number, since it uses less digits than its factorization.

1321443234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1806 (or 1794 counting only the distinct ones).

The product of its digits is 6912, while the sum is 27.

The square root of 1321443234 is about 36351.6606773336. The cubic root of 1321443234 is about 1097.3609557437.

Adding to 1321443234 its reverse (4323441231), we get a palindrome (5644884465).

The spelling of 1321443234 in words is "one billion, three hundred twenty-one million, four hundred forty-three thousand, two hundred thirty-four".