1321440334 has 8 divisors (see below), whose sum is σ = 1997768448. Its totient is φ = 655517520.

The previous prime is 1321440319. The next prime is 1321440359. The reversal of 1321440334 is 4330441231.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 1321440299 and 1321440308.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2601007 + ... + 2601514.

It is an arithmetic number, because the mean of its divisors is an integer number (249721056).

Almost surely, 2^1321440334 is an apocalyptic number.

1321440334 is a deficient number, since it is larger than the sum of its proper divisors (676328114).

1321440334 is a wasteful number, since it uses less digits than its factorization.

1321440334 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5202650.

The product of its (nonzero) digits is 3456, while the sum is 25.

The square root of 1321440334 is about 36351.6207891753. The cubic root of 1321440334 is about 1097.3601529979.

Adding to 1321440334 its reverse (4330441231), we get a palindrome (5651881565).

The spelling of 1321440334 in words is "one billion, three hundred twenty-one million, four hundred forty thousand, three hundred thirty-four".