311432012 has 6 divisors (see below), whose sum is σ = 545006028. Its totient is φ = 155716004.

The previous prime is 311431999. The next prime is 311432047. The reversal of 311432012 is 210234113.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38928998 + ... + 38929005.

It is an arithmetic number, because the mean of its divisors is an integer number (90834338).

Almost surely, 2^311432012 is an apocalyptic number.

It is an amenable number.

311432012 is a deficient number, since it is larger than the sum of its proper divisors (233574016).

311432012 is a wasteful number, since it uses less digits than its factorization.

311432012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77858007 (or 77858005 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 311432012 is about 17647.4364143918. The cubic root of 311432012 is about 677.8304643646.

Adding to 311432012 its reverse (210234113), we get a palindrome (521666125).

The spelling of 311432012 in words is "three hundred eleven million, four hundred thirty-two thousand, twelve".