1213313103 has 12 divisors (see below), whose sum is σ = 1855655568. Its totient is φ = 761294400.

The previous prime is 1213313099. The next prime is 1213313147. The reversal of 1213313103 is 3013133121.

It is a happy number.

1213313103 is a `hidden beast` number, since 1 + 21 + 331 + 310 + 3 = 666.

It is not a de Polignac number, because 1213313103 - 2² = 1213313099 is a prime.

It is a super-2 number, since 2×1213313103² = 2944257371822977218, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213313203) 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 11 ways as a sum of consecutive naturals, for example, 3964923 + ... + 3965228.

It is an arithmetic number, because the mean of its divisors is an integer number (154637964).

Almost surely, 2^1213313103 is an apocalyptic number.

1213313103 is a deficient number, since it is larger than the sum of its proper divisors (642342465).

1213313103 is a wasteful number, since it uses less digits than its factorization.

1213313103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7930174 (or 7930171 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 18.

The square root of 1213313103 is about 34832.6442148741. The cubic root of 1213313103 is about 1066.5739261926.

Adding to 1213313103 its reverse (3013133121), we get a palindrome (4226446224).

The spelling of 1213313103 in words is "one billion, two hundred thirteen million, three hundred thirteen thousand, one hundred three".