311404230222220 has 24 divisors (see below), whose sum is σ = 660423624891408. Its totient is φ = 123328408008000.

The previous prime is 311404230222167. The next prime is 311404230222257. The reversal of 311404230222220 is 22222032404113.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 77080252986 + ... + 77080257025.

It is an arithmetic number, because the mean of its divisors is an integer number (27517651037142).

Almost surely, 2^{311404230222220} is an apocalyptic number.

It is an amenable number.

311404230222220 is an abundant number, since it is smaller than the sum of its proper divisors (349019394669188).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

311404230222220 is a wasteful number, since it uses less digits than its factorization.

311404230222220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154160510121 (or 154160510119 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 28.

Adding to 311404230222220 its reverse (22222032404113), we get a palindrome (333626262626333).

The spelling of 311404230222220 in words is "three hundred eleven trillion, four hundred four billion, two hundred thirty million, two hundred twenty-two thousand, two hundred twenty".