1203213305 has 16 divisors (see below), whose sum is σ = 1652044800. Its totient is φ = 824098752.

The previous prime is 1203213299. The next prime is 1203213313. The reversal of 1203213305 is 5033123021.

It is a cyclic number.

It is not a de Polignac number, because 1203213305 - 2⁴ = 1203213289 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11096 + ... + 50294.

It is an arithmetic number, because the mean of its divisors is an integer number (103252800).

Almost surely, 2^1203213305 is an apocalyptic number.

It is an amenable number.

1203213305 is a deficient number, since it is larger than the sum of its proper divisors (448831495).

1203213305 is an equidigital number, since it uses as much as digits as its factorization.

1203213305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40088.

The product of its (nonzero) digits is 540, while the sum is 20.

The square root of 1203213305 is about 34687.3652069453. The cubic root of 1203213305 is about 1063.6062366156.

Adding to 1203213305 its reverse (5033123021), we get a palindrome (6236336326).

The spelling of 1203213305 in words is "one billion, two hundred three million, two hundred thirteen thousand, three hundred five".