313121022001 has 4 divisors (see below), whose sum is σ = 313247948272. Its totient is φ = 312994095732.

The previous prime is 313121021989. The next prime is 313121022077. The reversal of 313121022001 is 100220121313.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 313121022001 - 2¹³ = 313121013809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (313121622001) 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, 63459435 + ... + 63464368.

It is an arithmetic number, because the mean of its divisors is an integer number (78311987068).

Almost surely, 2^313121022001 is an apocalyptic number.

It is an amenable number.

313121022001 is a deficient number, since it is larger than the sum of its proper divisors (126926271).

313121022001 is a wasteful number, since it uses less digits than its factorization.

313121022001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126926270.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 313121022001 its reverse (100220121313), we get a palindrome (413341143314).

The spelling of 313121022001 in words is "three hundred thirteen billion, one hundred twenty-one million, twenty-two thousand, one".