1331451213 has 8 divisors (see below), whose sum is σ = 1808764128. Its totient is φ = 870886224.

The previous prime is 1331451211. The next prime is 1331451257. The reversal of 1331451213 is 3121541331.

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

It is not a de Polignac number, because 1331451213 - 2¹ = 1331451211 is a prime.

It is a super-4 number, since 4×1331451213⁴ (a number of 38 digits) contains 4444 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1331451211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4186795 + ... + 4187112.

It is an arithmetic number, because the mean of its divisors is an integer number (226095516).

Almost surely, 2^1331451213 is an apocalyptic number.

It is an amenable number.

1331451213 is a deficient number, since it is larger than the sum of its proper divisors (477312915).

1331451213 is an equidigital number, since it uses as much as digits as its factorization.

1331451213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8373963.

The product of its digits is 1080, while the sum is 24.

The square root of 1331451213 is about 36489.0560716498. The cubic root of 1331451213 is about 1100.1242870584.

Adding to 1331451213 its reverse (3121541331), we get a palindrome (4452992544).

The spelling of 1331451213 in words is "one billion, three hundred thirty-one million, four hundred fifty-one thousand, two hundred thirteen".