1320640223 has 16 divisors (see below), whose sum is σ = 1641282624. Its totient is φ = 1036592640.

The previous prime is 1320640219. The next prime is 1320640229. The reversal of 1320640223 is 3220460231.

It is a cyclic number.

It is not a de Polignac number, because 1320640223 - 2² = 1320640219 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 (1320640229) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 145568 + ... + 154373.

It is an arithmetic number, because the mean of its divisors is an integer number (102580164).

Almost surely, 2^1320640223 is an apocalyptic number.

1320640223 is a deficient number, since it is larger than the sum of its proper divisors (320642401).

1320640223 is a wasteful number, since it uses less digits than its factorization.

1320640223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 300002.

The product of its (nonzero) digits is 1728, while the sum is 23.

The square root of 1320640223 is about 36340.6139601411. The cubic root of 1320640223 is about 1097.1386302717.

The spelling of 1320640223 in words is "one billion, three hundred twenty million, six hundred forty thousand, two hundred twenty-three".