311221130230 has 16 divisors (see below), whose sum is σ = 561987810144. Its totient is φ = 124090724160.

The previous prime is 311221130197. The next prime is 311221130237. The reversal of 311221130230 is 32031122113.

It is a super-3 number, since 3×311221130230³ (a number of 35 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 311221130198 and 311221130207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (311221130237) 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, 49712706 + ... + 49718965.

It is an arithmetic number, because the mean of its divisors is an integer number (35124238134).

Almost surely, 2^311221130230 is an apocalyptic number.

311221130230 is a deficient number, since it is larger than the sum of its proper divisors (250766679914).

311221130230 is a wasteful number, since it uses less digits than its factorization.

311221130230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99431991.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 311221130230 its reverse (32031122113), we get a palindrome (343252252343).

The spelling of 311221130230 in words is "three hundred eleven billion, two hundred twenty-one million, one hundred thirty thousand, two hundred thirty".