313211121031121 has 4 divisors (see below), whose sum is σ = 323314705580544. Its totient is φ = 303107536481700.

The previous prime is 313211121031091. The next prime is 313211121031213. The reversal of 313211121031121 is 121130121112313.

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 a de Polignac number, because none of the positive numbers 2^k-313211121031121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (313211121034121) 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, 5051792274665 + ... + 5051792274726.

It is an arithmetic number, because the mean of its divisors is an integer number (80828676395136).

Almost surely, 2^{313211121031121} is an apocalyptic number.

313211121031121 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

313211121031121 is a deficient number, since it is larger than the sum of its proper divisors (10103584549423).

313211121031121 is a wasteful number, since it uses less digits than its factorization.

313211121031121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10103584549422.

The product of its (nonzero) digits is 216, while the sum is 23.

Adding to 313211121031121 its reverse (121130121112313), we get a palindrome (434341242143434).

The spelling of 313211121031121 in words is "three hundred thirteen trillion, two hundred eleven billion, one hundred twenty-one million, thirty-one thousand, one hundred twenty-one".