311540132 has 12 divisors (see below), whose sum is σ = 545319936. Its totient is φ = 155734440.

The previous prime is 311540071. The next prime is 311540137. The reversal of 311540132 is 231045113.

It is not an unprimeable number, because it can be changed into a prime (311540137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25757 + ... + 35867.

It is an arithmetic number, because the mean of its divisors is an integer number (45443328).

Almost surely, 2^311540132 is an apocalyptic number.

It is an amenable number.

311540132 is a deficient number, since it is larger than the sum of its proper divisors (233779804).

311540132 is a wasteful number, since it uses less digits than its factorization.

311540132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17818 (or 17816 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 311540132 is about 17650.4994830175. The cubic root of 311540132 is about 677.9088961974.

Adding to 311540132 its reverse (231045113), we get a palindrome (542585245).

The spelling of 311540132 in words is "three hundred eleven million, five hundred forty thousand, one hundred thirty-two".