115131183228 has 72 divisors (see below), whose sum is σ = 297281275200. Its totient is φ = 37555929216.

The previous prime is 115131183149. The next prime is 115131183301. The reversal of 115131183228 is 822381131511.

115131183228 is a `hidden beast` number, since 1 + 1 + 513 + 118 + 3 + 2 + 28 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 115131183192 and 115131183201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 664653 + ... + 819771.

It is an arithmetic number, because the mean of its divisors is an integer number (4128906600).

Almost surely, 2^115131183228 is an apocalyptic number.

115131183228 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 115131183228, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (148640637600).

115131183228 is an abundant number, since it is smaller than the sum of its proper divisors (182150091972).

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

115131183228 is a wasteful number, since it uses less digits than its factorization.

115131183228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155571 (or 155566 counting only the distinct ones).

The product of its digits is 11520, while the sum is 36.

The spelling of 115131183228 in words is "one hundred fifteen billion, one hundred thirty-one million, one hundred eighty-three thousand, two hundred twenty-eight".