311111012 has 12 divisors (see below), whose sum is σ = 553672560. Its totient is φ = 152918856.

The previous prime is 311110967. The next prime is 311111023. The reversal of 311111012 is 210111113.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 311110984 and 311111002.

It is an unprimeable number.

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, 658898 + ... + 659369.

It is an arithmetic number, because the mean of its divisors is an integer number (46139380).

Almost surely, 2^311111012 is an apocalyptic number.

It is an amenable number.

311111012 is a deficient number, since it is larger than the sum of its proper divisors (242561548).

311111012 is a wasteful number, since it uses less digits than its factorization.

311111012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1318330 (or 1318328 counting only the distinct ones).

The product of its (nonzero) digits is 6, while the sum is 11.

The square root of 311111012 is about 17638.3392642278. The cubic root of 311111012 is about 677.5974992555.

Adding to 311111012 its reverse (210111113), we get a palindrome (521222125).

It can be divided in two parts, 31111 and 1012, that added together give a palindrome (32123).

The spelling of 311111012 in words is "three hundred eleven million, one hundred eleven thousand, twelve".