313203021123 has 4 divisors (see below), whose sum is σ = 417604028168. Its totient is φ = 208802014080.

The previous prime is 313203021121. The next prime is 313203021137. The reversal of 313203021123 is 321120302313.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 321120302313 = 3 ⋅107040100771.

It is not a de Polignac number, because 313203021123 - 2¹ = 313203021121 is a prime.

It is a super-2 number, since 2×313203021123² (a number of 24 digits) contains 22 as substring.

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 313203021123.

It is not an unprimeable number, because it can be changed into a prime (313203021121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52200503518 + ... + 52200503523.

It is an arithmetic number, because the mean of its divisors is an integer number (104401007042).

Almost surely, 2^313203021123 is an apocalyptic number.

313203021123 is a deficient number, since it is larger than the sum of its proper divisors (104401007045).

313203021123 is a wasteful number, since it uses less digits than its factorization.

313203021123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104401007044.

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 313203021123 its reverse (321120302313), we get a palindrome (634323323436).

The spelling of 313203021123 in words is "three hundred thirteen billion, two hundred three million, twenty-one thousand, one hundred twenty-three".