1213503102 has 24 divisors (see below), whose sum is σ = 3004865136. Its totient is φ = 346715136.

The previous prime is 1213503101. The next prime is 1213503143. The reversal of 1213503102 is 2013053121.

1213503102 is a `hidden beast` number, since 1 + 2 + 1 + 350 + 310 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213503101) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4815363 + ... + 4815614.

It is an arithmetic number, because the mean of its divisors is an integer number (125202714).

Almost surely, 2^1213503102 is an apocalyptic number.

1213503102 is an abundant number, since it is smaller than the sum of its proper divisors (1791362034).

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

1213503102 is a wasteful number, since it uses less digits than its factorization.

1213503102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9630992 (or 9630989 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

The square root of 1213503102 is about 34835.3714204399. The cubic root of 1213503102 is about 1066.6295967369.

Adding to 1213503102 its reverse (2013053121), we get a palindrome (3226556223).

The spelling of 1213503102 in words is "one billion, two hundred thirteen million, five hundred three thousand, one hundred two".