190317312 has 216 divisors, whose sum is σ = 599783184. Its totient is φ = 57802752.

The previous prime is 190317311. The next prime is 190317317. The reversal of 190317312 is 213713091.

It is not an unprimeable number, because it can be changed into a prime (190317311) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1684168 + ... + 1684280.

It is an arithmetic number, because the mean of its divisors is an integer number (2776774).

Almost surely, 2^190317312 is an apocalyptic number.

190317312 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 190317312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (299891592).

190317312 is an abundant number, since it is smaller than the sum of its proper divisors (409465872).

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

190317312 is a wasteful number, since it uses less digits than its factorization.

190317312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195 (or 178 counting only the distinct ones).

The product of its (nonzero) digits is 1134, while the sum is 27.

The square root of 190317312 is about 13795.5540664375. The cubic root of 190317312 is about 575.2095639409.

The spelling of 190317312 in words is "one hundred ninety million, three hundred seventeen thousand, three hundred twelve".