331349856 has 96 divisors (see below), whose sum is σ = 926650368. Its totient is φ = 103311360.

The previous prime is 331349833. The next prime is 331349881. The reversal of 331349856 is 658943133.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 311181 + ... + 312243.

It is an arithmetic number, because the mean of its divisors is an integer number (9652608).

Almost surely, 2^331349856 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 331349856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (463325184).

331349856 is an abundant number, since it is smaller than the sum of its proper divisors (595300512).

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

331349856 is a wasteful number, since it uses less digits than its factorization.

331349856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1284 (or 1276 counting only the distinct ones).

The product of its digits is 233280, while the sum is 42.

The square root of 331349856 is about 18203.0177717872. The cubic root of 331349856 is about 691.9832711160.

The spelling of 331349856 in words is "three hundred thirty-one million, three hundred forty-nine thousand, eight hundred fifty-six".