1331033213 has 8 divisors (see below), whose sum is σ = 1381839480. Its totient is φ = 1280554240.

The previous prime is 1331033183. The next prime is 1331033243. The reversal of 1331033213 is 3123301331.

It is an interprime number because it is at equal distance from previous prime (1331033183) and next prime (1331033243).

It can be written as a sum of positive squares in 4 ways, for example, as 764688409 + 566344804 = 27653^2 + 23798^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1331033213 - 2²⁴ = 1314255997 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 (1331033243) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 73520 + ... + 89817.

It is an arithmetic number, because the mean of its divisors is an integer number (172729935).

Almost surely, 2^1331033213 is an apocalyptic number.

It is an amenable number.

1331033213 is a deficient number, since it is larger than the sum of its proper divisors (50806267).

1331033213 is a wasteful number, since it uses less digits than its factorization.

1331033213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163647.

The product of its (nonzero) digits is 486, while the sum is 20.

The square root of 1331033213 is about 36483.3278772647. The cubic root of 1331033213 is about 1100.0091495107.

Adding to 1331033213 its reverse (3123301331), we get a palindrome (4454334544).

The spelling of 1331033213 in words is "one billion, three hundred thirty-one million, thirty-three thousand, two hundred thirteen".