1321301313 has 24 divisors (see below), whose sum is σ = 1974525696. Its totient is φ = 850543200.

The previous prime is 1321301299. The next prime is 1321301321. The reversal of 1321301313 is 3131031231.

It is a happy number.

1321301313 is a `hidden beast` number, since 1 + 321 + 30 + 1 + 313 = 666.

It is not a de Polignac number, because 1321301313 - 2⁵ = 1321301281 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1321301213) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 125223 + ... + 135363.

It is an arithmetic number, because the mean of its divisors is an integer number (82271904).

Almost surely, 2^1321301313 is an apocalyptic number.

It is an amenable number.

1321301313 is a deficient number, since it is larger than the sum of its proper divisors (653224383).

1321301313 is a wasteful number, since it uses less digits than its factorization.

1321301313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10645 (or 10642 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 18.

The square root of 1321301313 is about 36349.7085682953. The cubic root of 1321301313 is about 1097.3216693696.

Adding to 1321301313 its reverse (3131031231), we get a palindrome (4452332544).

The spelling of 1321301313 in words is "one billion, three hundred twenty-one million, three hundred one thousand, three hundred thirteen".