311530030612 has 12 divisors (see below), whose sum is σ = 550470540256. Its totient is φ = 154252733400.

The previous prime is 311530030577. The next prime is 311530030613. The reversal of 311530030612 is 216030035113.

It is a super-2 number, since 2×311530030612² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (311530030613) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 378070014 + ... + 378070837.

Almost surely, 2^311530030612 is an apocalyptic number.

It is an amenable number.

311530030612 is a deficient number, since it is larger than the sum of its proper divisors (238940509644).

311530030612 is a wasteful number, since it uses less digits than its factorization.

311530030612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 756140958 (or 756140956 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 25.

Adding to 311530030612 its reverse (216030035113), we get a palindrome (527560065725).

The spelling of 311530030612 in words is "three hundred eleven billion, five hundred thirty million, thirty thousand, six hundred twelve".