1331313202 has 4 divisors (see below), whose sum is σ = 1996969806. Its totient is φ = 665656600.

The previous prime is 1331313167. The next prime is 1331313233. The reversal of 1331313202 is 2023131331.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 692689761 + 638623441 = 26319^2 + 25271^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1331313202.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 332828299 + ... + 332828302.

Almost surely, 2^1331313202 is an apocalyptic number.

1331313202 is a deficient number, since it is larger than the sum of its proper divisors (665656604).

1331313202 is an equidigital number, since it uses as much as digits as its factorization.

1331313202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 665656603.

The product of its (nonzero) digits is 324, while the sum is 19.

The square root of 1331313202 is about 36487.1648939733. The cubic root of 1331313202 is about 1100.0862747759.

Adding to 1331313202 its reverse (2023131331), we get a palindrome (3354444533).

The spelling of 1331313202 in words is "one billion, three hundred thirty-one million, three hundred thirteen thousand, two hundred two".