313203123012005 has 4 divisors (see below), whose sum is σ = 375843747614412. Its totient is φ = 250562498409600.

The previous prime is 313203123011993. The next prime is 313203123012037. The reversal of 313203123012005 is 500210321302313.

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 147468551057569 + 165734571954436 = 12143663^2 + 12873794^2 .

It is not a de Polignac number, because 313203123012005 - 2²⁰ = 313203121963429 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31320312301196 + ... + 31320312301205.

It is an arithmetic number, because the mean of its divisors is an integer number (93960936903603).

Almost surely, 2^{313203123012005} is an apocalyptic number.

It is an amenable number.

313203123012005 is a deficient number, since it is larger than the sum of its proper divisors (62640624602407).

313203123012005 is an equidigital number, since it uses as much as digits as its factorization.

313203123012005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62640624602406.

The product of its (nonzero) digits is 3240, while the sum is 26.

Adding to 313203123012005 its reverse (500210321302313), we get a palindrome (813413444314318).

The spelling of 313203123012005 in words is "three hundred thirteen trillion, two hundred three billion, one hundred twenty-three million, twelve thousand, five".