612113112 has 192 divisors, whose sum is σ = 1890514080. Its totient is φ = 184384512.

The previous prime is 612113111. The next prime is 612113119. The reversal of 612113112 is 211311216.

612113112 is a `hidden beast` number, since 612 + 11 + 31 + 12 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a nude number because it is divisible by every one of its digits and also a Zuckerman number because it is divisible by the product of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (612113111) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1339188 + ... + 1339644.

Almost surely, 2^612113112 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 612113112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (945257040).

612113112 is an abundant number, since it is smaller than the sum of its proper divisors (1278400968).

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

612113112 is a wasteful number, since it uses less digits than its factorization.

612113112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 544 (or 528 counting only the distinct ones).

The product of its digits is 72, while the sum is 18.

The square root of 612113112 is about 24740.9197888842. The cubic root of 612113112 is about 849.0707778524.

Adding to 612113112 its reverse (211311216), we get a palindrome (823424328).

The spelling of 612113112 in words is "six hundred twelve million, one hundred thirteen thousand, one hundred twelve".