168383201831 has 4 divisors (see below), whose sum is σ = 181335755832. Its totient is φ = 155430647832.

The previous prime is 168383201827. The next prime is 168383201887. The reversal of 168383201831 is 138102383861.

It is a happy number.

168383201831 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 168383201831 - 2² = 168383201827 is a prime.

It is a super-2 number, since 2×168383201831² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168383201821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6476276981 + ... + 6476277006.

It is an arithmetic number, because the mean of its divisors is an integer number (45333938958).

Almost surely, 2^168383201831 is an apocalyptic number.

168383201831 is a deficient number, since it is larger than the sum of its proper divisors (12952554001).

168383201831 is a wasteful number, since it uses less digits than its factorization.

168383201831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12952554000.

The product of its (nonzero) digits is 165888, while the sum is 44.

The spelling of 168383201831 in words is "one hundred sixty-eight billion, three hundred eighty-three million, two hundred one thousand, eight hundred thirty-one".