331994160 has 80 divisors (see below), whose sum is σ = 1143542880. Its totient is φ = 88531200.

The previous prime is 331994137. The next prime is 331994177. The reversal of 331994160 is 61499133.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×331994160² = 220440244548211200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 74691 + ... + 79010.

It is an arithmetic number, because the mean of its divisors is an integer number (14294286).

Almost surely, 2^331994160 is an apocalyptic number.

331994160 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

331994160 is an abundant number, since it is smaller than the sum of its proper divisors (811548720).

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

331994160 is a wasteful number, since it uses less digits than its factorization.

331994160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153723 (or 153711 counting only the distinct ones).

The product of its (nonzero) digits is 17496, while the sum is 36.

The square root of 331994160 is about 18220.7069017643. The cubic root of 331994160 is about 692.4314971750.

It can be divided in two parts, 3319 and 94160, that added together give a palindrome (97479).

The spelling of 331994160 in words is "three hundred thirty-one million, nine hundred ninety-four thousand, one hundred sixty".