1313011203 has 16 divisors (see below), whose sum is σ = 2041612800. Its totient is φ = 750291528.

The previous prime is 1313011187. The next prime is 1313011237. The reversal of 1313011203 is 3021103131.

It is not a de Polignac number, because 1313011203 - 2⁴ = 1313011187 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1313011243) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 636975 + ... + 639032.

It is an arithmetic number, because the mean of its divisors is an integer number (127600800).

Almost surely, 2^1313011203 is an apocalyptic number.

1313011203 is a deficient number, since it is larger than the sum of its proper divisors (728601597).

1313011203 is an equidigital number, since it uses as much as digits as its factorization.

1313011203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1276031 (or 1276017 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 15.

The square root of 1313011203 is about 36235.4964503041. The cubic root of 1313011203 is about 1095.0219140336.

Adding to 1313011203 its reverse (3021103131), we get a palindrome (4334114334).

The spelling of 1313011203 in words is "one billion, three hundred thirteen million, eleven thousand, two hundred three".