311133212132 has 24 divisors (see below), whose sum is σ = 550795162680. Its totient is φ = 153764399360.

The previous prime is 311133212129. The next prime is 311133212227. The reversal of 311133212132 is 231212331113.

It can be written as a sum of positive squares in 4 ways, for example, as 233295076 + 310899917056 = 15274^2 + 557584^2 .

It is a super-2 number, since 2×311133212132² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 311133212098 and 311133212107.

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, 865778 + ... + 1171254.

It is an arithmetic number, because the mean of its divisors is an integer number (22949798445).

Almost surely, 2^311133212132 is an apocalyptic number.

It is an amenable number.

311133212132 is a deficient number, since it is larger than the sum of its proper divisors (239661950548).

311133212132 is a wasteful number, since it uses less digits than its factorization.

311133212132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 308431 (or 308429 counting only the distinct ones).

The product of its digits is 648, while the sum is 23.

Adding to 311133212132 its reverse (231212331113), we get a palindrome (542345543245).

The spelling of 311133212132 in words is "three hundred eleven billion, one hundred thirty-three million, two hundred twelve thousand, one hundred thirty-two".