1313020202 has 16 divisors (see below), whose sum is σ = 2134549032. Its totient is φ = 602147520.

The previous prime is 1313020201. The next prime is 1313020223. The reversal of 1313020202 is 2020203131.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 575952001 + 737068201 = 23999^2 + 27149^2 .

It is not an unprimeable number, because it can be changed into a prime (1313020201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 156749 + ... + 164912.

Almost surely, 2^1313020202 is an apocalyptic number.

1313020202 is a deficient number, since it is larger than the sum of its proper divisors (821528830).

1313020202 is a wasteful number, since it uses less digits than its factorization.

1313020202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 321833.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 1313020202 is about 36235.6206239109. The cubic root of 1313020202 is about 1095.0244156827.

Adding to 1313020202 its reverse (2020203131), we get a palindrome (3333223333).

The spelling of 1313020202 in words is "one billion, three hundred thirteen million, twenty thousand, two hundred two".