1321313002 has 8 divisors (see below), whose sum is σ = 2019365316. Its totient is φ = 648191232.

The previous prime is 1321312997. The next prime is 1321313033. The reversal of 1321313002 is 2003131231.

It can be written as a sum of positive squares in 2 ways, for example, as 1284577281 + 36735721 = 35841^2 + 6061^2 .

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

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, 6232503 + ... + 6232714.

Almost surely, 2^1321313002 is an apocalyptic number.

1321313002 is a deficient number, since it is larger than the sum of its proper divisors (698052314).

1321313002 is a wasteful number, since it uses less digits than its factorization.

1321313002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12465272.

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 1321313002 is about 36349.8693532728. The cubic root of 1321313002 is about 1097.3249052086.

Adding to 1321313002 its reverse (2003131231), we get a palindrome (3324444233).

The spelling of 1321313002 in words is "one billion, three hundred twenty-one million, three hundred thirteen thousand, two".