311130131232 has 48 divisors (see below), whose sum is σ = 816747775200. Its totient is φ = 103706084352.

The previous prime is 311130131203. The next prime is 311130131239. The reversal of 311130131232 is 232131031113.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (48).

It is a junction number, because it is equal to n+sod(n) for n = 311130131199 and 311130131208.

It is not an unprimeable number, because it can be changed into a prime (311130131239) 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, 3571263 + ... + 3657345.

It is an arithmetic number, because the mean of its divisors is an integer number (17015578650).

Almost surely, 2^311130131232 is an apocalyptic number.

311130131232 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

311130131232 is an abundant number, since it is smaller than the sum of its proper divisors (505617643968).

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

311130131232 is a wasteful number, since it uses less digits than its factorization.

311130131232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123745 (or 123737 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 21.

Adding to 311130131232 its reverse (232131031113), we get a palindrome (543261162345).

The spelling of 311130131232 in words is "three hundred eleven billion, one hundred thirty million, one hundred thirty-one thousand, two hundred thirty-two".