1211352303 has 16 divisors (see below), whose sum is σ = 1849512960. Its totient is φ = 690835296.

The previous prime is 1211352299. The next prime is 1211352313. The reversal of 1211352303 is 3032531121.

It is not a de Polignac number, because 1211352303 - 2² = 1211352299 is a prime.

It is a super-3 number, since 3×1211352303³ (a number of 28 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 1211352303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1211352313) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45975 + ... + 67352.

It is an arithmetic number, because the mean of its divisors is an integer number (115594560).

Almost surely, 2^1211352303 is an apocalyptic number.

1211352303 is a deficient number, since it is larger than the sum of its proper divisors (638160657).

1211352303 is a wasteful number, since it uses less digits than its factorization.

1211352303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113846.

The product of its (nonzero) digits is 540, while the sum is 21.

The square root of 1211352303 is about 34804.4868228221. The cubic root of 1211352303 is about 1065.9990633795. Note that the first 3 decimals are identical.

Adding to 1211352303 its reverse (3032531121), we get a palindrome (4243883424).

The spelling of 1211352303 in words is "one billion, two hundred eleven million, three hundred fifty-two thousand, three hundred three".