1302231313 has 4 divisors (see below), whose sum is σ = 1302690928. Its totient is φ = 1301771700.

The previous prime is 1302231311. The next prime is 1302231361. The reversal of 1302231313 is 3131322031.

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: 3131322031 = 47 ⋅66623873.

It is a cyclic number.

It is not a de Polignac number, because 1302231313 - 2¹ = 1302231311 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1302231311) 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, 225531 + ... + 231232.

It is an arithmetic number, because the mean of its divisors is an integer number (325672732).

Almost surely, 2^1302231313 is an apocalyptic number.

It is an amenable number.

1302231313 is a deficient number, since it is larger than the sum of its proper divisors (459615).

1302231313 is an equidigital number, since it uses as much as digits as its factorization.

1302231313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 459614.

The product of its (nonzero) digits is 324, while the sum is 19.

The square root of 1302231313 is about 36086.4422325061. The cubic root of 1302231313 is about 1092.0169464401.

Adding to 1302231313 its reverse (3131322031), we get a palindrome (4433553344).

The spelling of 1302231313 in words is "one billion, three hundred two million, two hundred thirty-one thousand, three hundred thirteen".