1331214133 has 4 divisors (see below), whose sum is σ = 1331287660. Its totient is φ = 1331140608.

The previous prime is 1331214113. The next prime is 1331214139. The reversal of 1331214133 is 3314121331.

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 can be written as a sum of positive squares in 2 ways, for example, as 125596849 + 1205617284 = 11207^2 + 34722^2 .

It is a cyclic number.

It is not a de Polignac number, because 1331214133 - 2²¹ = 1329116981 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1331214139) 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, 11623 + ... + 52891.

It is an arithmetic number, because the mean of its divisors is an integer number (332821915).

Almost surely, 2^1331214133 is an apocalyptic number.

It is an amenable number.

1331214133 is a deficient number, since it is larger than the sum of its proper divisors (73527).

1331214133 is an equidigital number, since it uses as much as digits as its factorization.

1331214133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73526.

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

The square root of 1331214133 is about 36485.8072817363. The cubic root of 1331214133 is about 1100.0589866440.

Adding to 1331214133 its reverse (3314121331), we get a palindrome (4645335464).

The spelling of 1331214133 in words is "one billion, three hundred thirty-one million, two hundred fourteen thousand, one hundred thirty-three".