313021201123 has 4 divisors (see below), whose sum is σ = 313024483048. Its totient is φ = 313017919200.

The previous prime is 313021201117. The next prime is 313021201183. The reversal of 313021201123 is 321102120313.

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

It is a cyclic number.

It is not a de Polignac number, because 313021201123 - 2¹⁷ = 313021070051 is a prime.

It is a super-2 number, since 2×313021201123² (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 313021201123.

It is not an unprimeable number, because it can be changed into a prime (313021201183) 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, 1493478 + ... + 1690123.

It is an arithmetic number, because the mean of its divisors is an integer number (78256120762).

Almost surely, 2^313021201123 is an apocalyptic number.

313021201123 is a deficient number, since it is larger than the sum of its proper divisors (3281925).

313021201123 is an equidigital number, since it uses as much as digits as its factorization.

313021201123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3281924.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 313021201123 its reverse (321102120313), we get a palindrome (634123321436).

The spelling of 313021201123 in words is "three hundred thirteen billion, twenty-one million, two hundred one thousand, one hundred twenty-three".