1203213311 has 4 divisors (see below), whose sum is σ = 1203291672. Its totient is φ = 1203134952.

The previous prime is 1203213299. The next prime is 1203213313. The reversal of 1203213311 is 1133123021.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 1203213311 - 2²⁶ = 1136104447 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1203213311.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1203213313) 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, 7736 + ... + 49661.

It is an arithmetic number, because the mean of its divisors is an integer number (300822918).

Almost surely, 2^1203213311 is an apocalyptic number.

1203213311 is a deficient number, since it is larger than the sum of its proper divisors (78361).

1203213311 is an equidigital number, since it uses as much as digits as its factorization.

1203213311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78360.

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 1203213311 is about 34687.3652934321. The cubic root of 1203213311 is about 1063.6062383835.

Adding to 1203213311 its reverse (1133123021), we get a palindrome (2336336332).

The spelling of 1203213311 in words is "one billion, two hundred three million, two hundred thirteen thousand, three hundred eleven".