311303021132 has 12 divisors (see below), whose sum is σ = 544792002720. Its totient is φ = 155648163216.

The previous prime is 311303021111. The next prime is 311303021167. The reversal of 311303021132 is 231120303113.

It is a super-2 number, since 2×311303021132² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 621428 + ... + 1004379.

It is an arithmetic number, because the mean of its divisors is an integer number (45399333560).

Almost surely, 2^311303021132 is an apocalyptic number.

It is an amenable number.

311303021132 is a deficient number, since it is larger than the sum of its proper divisors (233488981588).

311303021132 is a wasteful number, since it uses less digits than its factorization.

311303021132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1673680 (or 1673678 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 311303021132 its reverse (231120303113), we get a palindrome (542423324245).

The spelling of 311303021132 in words is "three hundred eleven billion, three hundred three million, twenty-one thousand, one hundred thirty-two".