331623712 has 48 divisors (see below), whose sum is σ = 749371392. Its totient is φ = 141511680.

The previous prime is 331623653. The next prime is 331623713. The reversal of 331623712 is 217326133.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is not an unprimeable number, because it can be changed into a prime (331623713) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50913 + ... + 57055.

It is an arithmetic number, because the mean of its divisors is an integer number (15611904).

Almost surely, 2^331623712 is an apocalyptic number.

331623712 is a gapful number since it is divisible by the number (32) 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 331623712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (374685696).

331623712 is an abundant number, since it is smaller than the sum of its proper divisors (417747680).

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

331623712 is a wasteful number, since it uses less digits than its factorization.

331623712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6401 (or 6393 counting only the distinct ones).

The product of its digits is 4536, while the sum is 28.

The square root of 331623712 is about 18210.5384873704. The cubic root of 331623712 is about 692.1738567702.

Adding to 331623712 its reverse (217326133), we get a palindrome (548949845).

It can be divided in two parts, 3316 and 23712, that added together give a triangular number (27028 = T₂₃₂).

The spelling of 331623712 in words is "three hundred thirty-one million, six hundred twenty-three thousand, seven hundred twelve".