1321480239 has 4 divisors (see below), whose sum is σ = 1761973656. Its totient is φ = 880986824.

The previous prime is 1321480231. The next prime is 1321480241. The reversal of 1321480239 is 9320841231.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1321480239 - 2³ = 1321480231 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1321480231) 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, 220246704 + ... + 220246709.

It is an arithmetic number, because the mean of its divisors is an integer number (440493414).

Almost surely, 2^1321480239 is an apocalyptic number.

1321480239 is a deficient number, since it is larger than the sum of its proper divisors (440493417).

1321480239 is an equidigital number, since it uses as much as digits as its factorization.

1321480239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 440493416.

The product of its (nonzero) digits is 10368, while the sum is 33.

The square root of 1321480239 is about 36352.1696601455. The cubic root of 1321480239 is about 1097.3711989541.

The spelling of 1321480239 in words is "one billion, three hundred twenty-one million, four hundred eighty thousand, two hundred thirty-nine".