1213302103 has 4 divisors (see below), whose sum is σ = 1306633048. Its totient is φ = 1119971160.

The previous prime is 1213302059. The next prime is 1213302109. The reversal of 1213302103 is 3012033121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3012033121 = 19 ⋅158528059.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1213302103 is a prime.

It is a super-3 number, since 3×1213302103³ (a number of 28 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213302109) 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 3 ways as a sum of consecutive naturals, for example, 46665453 + ... + 46665478.

It is an arithmetic number, because the mean of its divisors is an integer number (326658262).

Almost surely, 2^1213302103 is an apocalyptic number.

1213302103 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1213302103 is a deficient number, since it is larger than the sum of its proper divisors (93330945).

1213302103 is an equidigital number, since it uses as much as digits as its factorization.

1213302103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93330944.

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 1213302103 is about 34832.4863166556. The cubic root of 1213302103 is about 1066.5707029662.

Adding to 1213302103 its reverse (3012033121), we get a palindrome (4225335224).

The spelling of 1213302103 in words is "one billion, two hundred thirteen million, three hundred two thousand, one hundred three".