313312121120203 has 4 divisors (see below), whose sum is σ = 326934387255888. Its totient is φ = 299689854984520.

The previous prime is 313312121120197. The next prime is 313312121120213. The reversal of 313312121120203 is 302021121213313.

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 313312121120203 - 2⁵ = 313312121120171 is a prime.

It is a super-2 number, since 2×313312121120203² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (313312121120213) 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, 6811133067808 + ... + 6811133067853.

It is an arithmetic number, because the mean of its divisors is an integer number (81733596813972).

Almost surely, 2^{313312121120203} is an apocalyptic number.

313312121120203 is a deficient number, since it is larger than the sum of its proper divisors (13622266135685).

313312121120203 is a wasteful number, since it uses less digits than its factorization.

313312121120203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13622266135684.

The product of its (nonzero) digits is 1296, while the sum is 25.

Adding to 313312121120203 its reverse (302021121213313), we get a palindrome (615333242333516).

The spelling of 313312121120203 in words is "three hundred thirteen trillion, three hundred twelve billion, one hundred twenty-one million, one hundred twenty thousand, two hundred three".