73111312 has 20 divisors (see below), whose sum is σ = 142069900. Its totient is φ = 36448128.

The previous prime is 73111279. The next prime is 73111321. The reversal of 73111312 is 21311137.

It can be written as a sum of positive squares in 2 ways, for example, as 60466176 + 12645136 = 7776^2 + 3556^2 .

It is a super-2 number, since 2×73111312² = 10690527884722688, 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 73111312.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 963 + ... + 12130.

It is an arithmetic number, because the mean of its divisors is an integer number (7103495).

Almost surely, 2^73111312 is an apocalyptic number.

It is an amenable number.

73111312 is a deficient number, since it is larger than the sum of its proper divisors (68958588).

73111312 is a wasteful number, since it uses less digits than its factorization.

73111312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13450 (or 13444 counting only the distinct ones).

The product of its digits is 126, while the sum is 19.

The square root of 73111312 is about 8550.5153061087. The cubic root of 73111312 is about 418.1462366930.

Adding to 73111312 its reverse (21311137), we get a palindrome (94422449).

The spelling of 73111312 in words is "seventy-three million, one hundred eleven thousand, three hundred twelve".