331989289236 has 144 divisors (see below), whose sum is σ = 922353868800. Its totient is φ = 99850900800.

The previous prime is 331989289231. The next prime is 331989289279. The reversal of 331989289236 is 632982989133.

331989289236 is a `hidden beast` number, since 3 + 31 + 98 + 9 + 289 + 236 = 666.

It is a super-2 number, since 2×331989289236² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (331989289231) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 29428645 + ... + 29439923.

It is an arithmetic number, because the mean of its divisors is an integer number (6405235200).

Almost surely, 2^331989289236 is an apocalyptic number.

331989289236 is a gapful number since it is divisible by the number (36) 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 331989289236, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (461176934400).

331989289236 is an abundant number, since it is smaller than the sum of its proper divisors (590364579564).

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

331989289236 is a wasteful number, since it uses less digits than its factorization.

331989289236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11850 (or 11845 counting only the distinct ones).

The product of its digits is 30233088, while the sum is 63.

The spelling of 331989289236 in words is "three hundred thirty-one billion, nine hundred eighty-nine million, two hundred eighty-nine thousand, two hundred thirty-six".