311103312 has 60 divisors (see below), whose sum is σ = 870283584. Its totient is φ = 95721600.

The previous prime is 311103307. The next prime is 311103319. The reversal of 311103312 is 213301113.

It is a junction number, because it is equal to n+sod(n) for n = 311103291 and 311103300.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (311103319) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11064 + ... + 27287.

Almost surely, 2^311103312 is an apocalyptic number.

It is an amenable number.

311103312 is an abundant number, since it is smaller than the sum of its proper divisors (559180272).

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

311103312 is a wasteful number, since it uses less digits than its factorization.

311103312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38388 (or 38369 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 15.

The square root of 311103312 is about 17638.1209883593. The cubic root of 311103312 is about 677.5919090282.

Adding to 311103312 its reverse (213301113), we get a palindrome (524404425).

The spelling of 311103312 in words is "three hundred eleven million, one hundred three thousand, three hundred twelve".