1213503103424 has 28 divisors (see below), whose sum is σ = 2408678900184. Its totient is φ = 606591884544.

The previous prime is 1213503103411. The next prime is 1213503103427. The reversal of 1213503103424 is 4243013053121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213503103427) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2249507 + ... + 2736290.

Almost surely, 2^{1213503103424} is an apocalyptic number.

It is an amenable number.

1213503103424 is a deficient number, since it is larger than the sum of its proper divisors (1195175796760).

1213503103424 is an equidigital number, since it uses as much as digits as its factorization.

1213503103424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4989612 (or 4989602 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 29.

Adding to 1213503103424 its reverse (4243013053121), we get a palindrome (5456516156545).

The spelling of 1213503103424 in words is "one trillion, two hundred thirteen billion, five hundred three million, one hundred three thousand, four hundred twenty-four".