311220202102230 has 64 divisors (see below), whose sum is σ = 749486264361408. Its totient is φ = 82707862648320.

The previous prime is 311220202102207. The next prime is 311220202102279. The reversal of 311220202102230 is 32201202022113.

It is a super-2 number, since 2×311220202102230² (a number of 30 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 311220202102197 and 311220202102206.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1135715592 + ... + 1135989588.

It is an arithmetic number, because the mean of its divisors is an integer number (11710722880647).

Almost surely, 2^{311220202102230} is an apocalyptic number.

311220202102230 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

311220202102230 is an abundant number, since it is smaller than the sum of its proper divisors (438266062259178).

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

311220202102230 is a wasteful number, since it uses less digits than its factorization.

311220202102230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 403521.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 311220202102230 its reverse (32201202022113), we get a palindrome (343421404124343).

The spelling of 311220202102230 in words is "three hundred eleven trillion, two hundred twenty billion, two hundred two million, one hundred two thousand, two hundred thirty".