611111312 has 20 divisors (see below), whose sum is σ = 1353175296. Its totient is φ = 261904800.

The previous prime is 611111297. The next prime is 611111317. The reversal of 611111312 is 213111116.

It is a super-2 number, since 2×611111312² = 746914071308722688, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (611111317) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2728064 + ... + 2728287.

Almost surely, 2^611111312 is an apocalyptic number.

It is an amenable number.

611111312 is an abundant number, since it is smaller than the sum of its proper divisors (742063984).

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

611111312 is a wasteful number, since it uses less digits than its factorization.

611111312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5456366 (or 5456360 counting only the distinct ones).

The product of its digits is 36, while the sum is 17.

The square root of 611111312 is about 24720.6656868297. The cubic root of 611111312 is about 848.6073212634.

Adding to 611111312 its reverse (213111116), we get a palindrome (824222428).

The spelling of 611111312 in words is "six hundred eleven million, one hundred eleven thousand, three hundred twelve".