1313202856 has 32 divisors (see below), whose sum is σ = 2817204480. Its totient is φ = 562161600.

The previous prime is 1313202851. The next prime is 1313202887. The reversal of 1313202856 is 6582023131.

It is not an unprimeable number, because it can be changed into a prime (1313202851) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38146 + ... + 63886.

It is an arithmetic number, because the mean of its divisors is an integer number (88037640).

Almost surely, 2^1313202856 is an apocalyptic number.

It is an amenable number.

1313202856 is an abundant number, since it is smaller than the sum of its proper divisors (1504001624).

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

1313202856 is a wasteful number, since it uses less digits than its factorization.

1313202856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26665 (or 26661 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 1313202856 is about 36238.1409015418. The cubic root of 1313202856 is about 1095.0751895437.

Adding to 1313202856 its reverse (6582023131), we get a palindrome (7895225987).

The spelling of 1313202856 in words is "one billion, three hundred thirteen million, two hundred two thousand, eight hundred fifty-six".