1213203112303 has 64 divisors (see below), whose sum is σ = 1598205627648. Its totient is φ = 893622067200.

The previous prime is 1213203112273. The next prime is 1213203112307. The reversal of 1213203112303 is 3032113023121.

It is a cyclic number.

It is not a de Polignac number, because 1213203112303 - 2²¹ = 1213201015151 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213203112307) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 193274401 + ... + 193280677.

It is an arithmetic number, because the mean of its divisors is an integer number (24971962932).

Almost surely, 2^{1213203112303} is an apocalyptic number.

1213203112303 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1213203112303 is a deficient number, since it is larger than the sum of its proper divisors (385002515345).

1213203112303 is a wasteful number, since it uses less digits than its factorization.

1213203112303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7652.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 1213203112303 its reverse (3032113023121), we get a palindrome (4245316135424).

The spelling of 1213203112303 in words is "one trillion, two hundred thirteen billion, two hundred three million, one hundred twelve thousand, three hundred three".