1453321213 has 4 divisors (see below), whose sum is σ = 1453534720. Its totient is φ = 1453107708.

The previous prime is 1453321159. The next prime is 1453321231. The reversal of 1453321213 is 3121233541.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 3121233541 = 17 ⋅183601973.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1453321213 is a prime.

It is a super-2 number, since 2×1453321213² = 4224285096311582738, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1453321253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 96195 + ... + 110272.

It is an arithmetic number, because the mean of its divisors is an integer number (363383680).

Almost surely, 2^1453321213 is an apocalyptic number.

It is an amenable number.

1453321213 is a deficient number, since it is larger than the sum of its proper divisors (213507).

1453321213 is an equidigital number, since it uses as much as digits as its factorization.

1453321213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213506.

The product of its digits is 2160, while the sum is 25.

The square root of 1453321213 is about 38122.4502491642. The cubic root of 1453321213 is about 1132.7147022792.

Adding to 1453321213 its reverse (3121233541), we get a palindrome (4574554754).

The spelling of 1453321213 in words is "one billion, four hundred fifty-three million, three hundred twenty-one thousand, two hundred thirteen".