331404102 has 64 divisors (see below), whose sum is σ = 773660160. Its totient is φ = 104952672.

The previous prime is 331404019. The next prime is 331404109. The reversal of 331404102 is 201404133.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (331404109) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 201628 + ... + 203264.

It is an arithmetic number, because the mean of its divisors is an integer number (12088440).

Almost surely, 2^331404102 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 331404102, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (386830080).

331404102 is an abundant number, since it is smaller than the sum of its proper divisors (442256058).

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

331404102 is a wasteful number, since it uses less digits than its factorization.

331404102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1834 (or 1828 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 331404102 is about 18204.5077384696. The cubic root of 331404102 is about 692.0210310803.

Adding to 331404102 its reverse (201404133), we get a palindrome (532808235).

The spelling of 331404102 in words is "three hundred thirty-one million, four hundred four thousand, one hundred two".