1213564103 has 8 divisors (see below), whose sum is σ = 1250726400. Its totient is φ = 1176808248.

The previous prime is 1213564049. The next prime is 1213564123. The reversal of 1213564103 is 3014653121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1213564103 - 2¹⁶ = 1213498567 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213564123) 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 7 ways as a sum of consecutive naturals, for example, 95543 + ... + 107496.

It is an arithmetic number, because the mean of its divisors is an integer number (156340800).

Almost surely, 2^1213564103 is an apocalyptic number.

1213564103 is a deficient number, since it is larger than the sum of its proper divisors (37162297).

1213564103 is a wasteful number, since it uses less digits than its factorization.

1213564103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203221.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 1213564103 is about 34836.2469706483. The cubic root of 1213564103 is about 1066.6474690664.

The spelling of 1213564103 in words is "one billion, two hundred thirteen million, five hundred sixty-four thousand, one hundred three".