1313123202 has 12 divisors (see below), whose sum is σ = 2845100310. Its totient is φ = 437707728.

The previous prime is 1313123179. The next prime is 1313123257. The reversal of 1313123202 is 2023213131.

1313123202 is a `hidden beast` number, since 1 + 31 + 312 + 320 + 2 = 666.

It can be written as a sum of positive squares in only one way, i.e., 796424841 + 516698361 = 28221^2 + 22731^2 .

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 72951289 = 1313123202 / (1 + 3 + 1 + 3 + 1 + 2 + 3 + 2 + 0 + 2).

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 36475627 + ... + 36475662.

Almost surely, 2^1313123202 is an apocalyptic number.

1313123202 is an abundant number, since it is smaller than the sum of its proper divisors (1531977108).

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

1313123202 is a wasteful number, since it uses less digits than its factorization.

1313123202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72951297 (or 72951294 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 1313123202 is about 36237.0418494667. The cubic root of 1313123202 is about 1095.0530480336.

Adding to 1313123202 its reverse (2023213131), we get a palindrome (3336336333).

The spelling of 1313123202 in words is "one billion, three hundred thirteen million, one hundred twenty-three thousand, two hundred two".