191023332 has 12 divisors (see below), whose sum is σ = 445721136. Its totient is φ = 63674440.

The previous prime is 191023307. The next prime is 191023337. The reversal of 191023332 is 233320191.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (191023337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7959294 + ... + 7959317.

It is an arithmetic number, because the mean of its divisors is an integer number (37143428).

Almost surely, 2^191023332 is an apocalyptic number.

191023332 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

191023332 is an abundant number, since it is smaller than the sum of its proper divisors (254697804).

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

191023332 is a wasteful number, since it uses less digits than its factorization.

191023332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15918618 (or 15918616 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 24.

The square root of 191023332 is about 13821.1190574425. The cubic root of 191023332 is about 575.9199710380.

The spelling of 191023332 in words is "one hundred ninety-one million, twenty-three thousand, three hundred thirty-two".