1312313201 has 4 divisors (see below), whose sum is σ = 1312402932. Its totient is φ = 1312223472.

The previous prime is 1312313159. The next prime is 1312313209. The reversal of 1312313201 is 1023132131.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 903303025 + 409010176 = 30055^2 + 20224^2 .

It is a cyclic number.

It is not a de Polignac number, because 1312313201 - 2⁶ = 1312313137 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1312313201.

It is not an unprimeable number, because it can be changed into a prime (1312313209) 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, 17270 + ... + 54063.

It is an arithmetic number, because the mean of its divisors is an integer number (328100733).

Almost surely, 2^1312313201 is an apocalyptic number.

It is an amenable number.

1312313201 is a deficient number, since it is larger than the sum of its proper divisors (89731).

1312313201 is an equidigital number, since it uses as much as digits as its factorization.

1312313201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89730.

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 1312313201 is about 36225.8637026089. The cubic root of 1312313201 is about 1094.8278402983.

Adding to 1312313201 its reverse (1023132131), we get a palindrome (2335445332).

The spelling of 1312313201 in words is "one billion, three hundred twelve million, three hundred thirteen thousand, two hundred one".