1213104133 has 24 divisors (see below), whose sum is σ = 1304079480. Its totient is φ = 1126796160.

The previous prime is 1213104131. The next prime is 1213104143. The reversal of 1213104133 is 3314013121.

It can be written as a sum of positive squares in 4 ways, for example, as 205549569 + 1007554564 = 14337^2 + 31742^2 .

It is not a de Polignac number, because 1213104133 - 2¹ = 1213104131 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 1213104133.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213104131) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6157791 + ... + 6157987.

It is an arithmetic number, because the mean of its divisors is an integer number (54336645).

Almost surely, 2^1213104133 is an apocalyptic number.

It is an amenable number.

1213104133 is a deficient number, since it is larger than the sum of its proper divisors (90975347).

1213104133 is an equidigital number, since it uses as much as digits as its factorization.

1213104133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 405 (or 346 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 1213104133 is about 34829.6444569852. The cubic root of 1213104133 is about 1066.5126903501.

Adding to 1213104133 its reverse (3314013121), we get a palindrome (4527117254).

The spelling of 1213104133 in words is "one billion, two hundred thirteen million, one hundred four thousand, one hundred thirty-three".