1320553213 has 8 divisors (see below), whose sum is σ = 1509427328. Its totient is φ = 1131735024.

The previous prime is 1320553189. The next prime is 1320553231. The reversal of 1320553213 is 3123550231.

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

It is not a de Polignac number, because 1320553213 - 2¹⁷ = 1320422141 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 (1320553613) 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, 71395 + ... + 87967.

It is an arithmetic number, because the mean of its divisors is an integer number (188678416).

Almost surely, 2^1320553213 is an apocalyptic number.

It is an amenable number.

1320553213 is a deficient number, since it is larger than the sum of its proper divisors (188874115).

1320553213 is a wasteful number, since it uses less digits than its factorization.

1320553213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27963.

The product of its (nonzero) digits is 2700, while the sum is 25.

The square root of 1320553213 is about 36339.4167949900. The cubic root of 1320553213 is about 1097.1145348551.

The spelling of 1320553213 in words is "one billion, three hundred twenty million, five hundred fifty-three thousand, two hundred thirteen".