311230201330 has 16 divisors (see below), whose sum is σ = 560233508184. Its totient is φ = 124487825920.

The previous prime is 311230201313. The next prime is 311230201333. The reversal of 311230201330 is 33102032113.

It can be written as a sum of positive squares in 4 ways, for example, as 239760060409 + 71470140921 = 489653^2 + 267339^2 .

It is a junction number, because it is equal to n+sod(n) for n = 311230201298 and 311230201307.

It is not an unprimeable number, because it can be changed into a prime (311230201333) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 215641 + ... + 817900.

Almost surely, 2^311230201330 is an apocalyptic number.

311230201330 is a deficient number, since it is larger than the sum of its proper divisors (249003306854).

311230201330 is a wasteful number, since it uses less digits than its factorization.

311230201330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1063661.

The product of its (nonzero) digits is 324, while the sum is 19.

Adding to 311230201330 its reverse (33102032113), we get a palindrome (344332233443).

The spelling of 311230201330 in words is "three hundred eleven billion, two hundred thirty million, two hundred one thousand, three hundred thirty".