311544012 has 48 divisors (see below), whose sum is σ = 799529472. Its totient is φ = 93817920.

The previous prime is 311543977. The next prime is 311544029. The reversal of 311544012 is 210445113.

It is a super-2 number, since 2×311544012² = 194119342826112288, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 311544012.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13914 + ... + 28577.

It is an arithmetic number, because the mean of its divisors is an integer number (16656864).

Almost surely, 2^311544012 is an apocalyptic number.

It is an amenable number.

311544012 is an abundant number, since it is smaller than the sum of its proper divisors (487985460).

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

311544012 is a wasteful number, since it uses less digits than its factorization.

311544012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42558 (or 42556 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 311544012 is about 17650.6093945790. The cubic root of 311544012 is about 677.9117104689.

Adding to 311544012 its reverse (210445113), we get a palindrome (521989125).

The spelling of 311544012 in words is "three hundred eleven million, five hundred forty-four thousand, twelve".