1320493213 has 4 divisors (see below), whose sum is σ = 1422069628. Its totient is φ = 1218916800.

The previous prime is 1320493211. The next prime is 1320493261. The reversal of 1320493213 is 3123940231.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3123940231 = 9103 ⋅343177.

It can be written as a sum of positive squares in 2 ways, for example, as 886729284 + 433763929 = 29778^2 + 20827^2 .

It is a cyclic number.

It is not a de Polignac number, because 1320493213 - 2¹ = 1320493211 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 (1320493211) 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, 50788188 + ... + 50788213.

It is an arithmetic number, because the mean of its divisors is an integer number (355517407).

Almost surely, 2^1320493213 is an apocalyptic number.

1320493213 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1320493213 is a deficient number, since it is larger than the sum of its proper divisors (101576415).

1320493213 is a wasteful number, since it uses less digits than its factorization.

1320493213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101576414.

The product of its (nonzero) digits is 3888, while the sum is 28.

The square root of 1320493213 is about 36338.5912357648. The cubic root of 1320493213 is about 1097.0979186197.

The spelling of 1320493213 in words is "one billion, three hundred twenty million, four hundred ninety-three thousand, two hundred thirteen".