311210002121 has 8 divisors (see below), whose sum is σ = 329539698720. Its totient is φ = 292882886208.

The previous prime is 311210002079. The next prime is 311210002139. The reversal of 311210002121 is 121200012113.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-311210002121 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 311210002096 and 311210002105.

It is not an unprimeable number, because it can be changed into a prime (311210002421) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 394091 + ... + 881888.

It is an arithmetic number, because the mean of its divisors is an integer number (41192462340).

Almost surely, 2^311210002121 is an apocalyptic number.

It is an amenable number.

311210002121 is a deficient number, since it is larger than the sum of its proper divisors (18329696599).

311210002121 is a wasteful number, since it uses less digits than its factorization.

311210002121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1290343.

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 311210002121 its reverse (121200012113), we get a palindrome (432410014234).

The spelling of 311210002121 in words is "three hundred eleven billion, two hundred ten million, two thousand, one hundred twenty-one".