1201320031313 has 4 divisors (see below), whose sum is σ = 1205994428580. Its totient is φ = 1196645634048.

The previous prime is 1201320031297. The next prime is 1201320031337. The reversal of 1201320031313 is 3131300231021.

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

It can be written as a sum of positive squares in 2 ways, for example, as 949889992129 + 251430039184 = 974623^2 + 501428^2 .

It is a cyclic number.

It is not a de Polignac number, because 1201320031313 - 2⁴ = 1201320031297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1201320001313) 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, 2337198248 + ... + 2337198761.

It is an arithmetic number, because the mean of its divisors is an integer number (301498607145).

Almost surely, 2^{1201320031313} is an apocalyptic number.

It is an amenable number.

1201320031313 is a deficient number, since it is larger than the sum of its proper divisors (4674397267).

1201320031313 is an equidigital number, since it uses as much as digits as its factorization.

1201320031313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4674397266.

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 1201320031313 its reverse (3131300231021), we get a palindrome (4332620262334).

The spelling of 1201320031313 in words is "one trillion, two hundred one billion, three hundred twenty million, thirty-one thousand, three hundred thirteen".