188313012 has 120 divisors (see below), whose sum is σ = 526901760. Its totient is φ = 58440960.

The previous prime is 188312989. The next prime is 188313023. The reversal of 188313012 is 210313881.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 985837 + ... + 986027.

It is an arithmetic number, because the mean of its divisors is an integer number (4390848).

Almost surely, 2^188313012 is an apocalyptic number.

188313012 is a gapful number since it is divisible by the number (12) 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 188313012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (263450880).

188313012 is an abundant number, since it is smaller than the sum of its proper divisors (338588748).

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

188313012 is a wasteful number, since it uses less digits than its factorization.

188313012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 403 (or 392 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 27.

The square root of 188313012 is about 13722.7188268215. The cubic root of 188313012 is about 573.1831875022.

Adding to 188313012 its reverse (210313881), we get a palindrome (398626893).

The spelling of 188313012 in words is "one hundred eighty-eight million, three hundred thirteen thousand, twelve".