331212102 has 64 divisors (see below), whose sum is σ = 734275584. Its totient is φ = 98962560.

The previous prime is 331212097. The next prime is 331212107. The reversal of 331212102 is 201212133.

It is an interprime number because it is at equal distance from previous prime (331212097) and next prime (331212107).

It is a super-2 number, since 2×331212102² = 219402913022516808, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (331212107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 611952 + ... + 612492.

It is an arithmetic number, because the mean of its divisors is an integer number (11473056).

Almost surely, 2^331212102 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 331212102, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (367137792).

331212102 is an abundant number, since it is smaller than the sum of its proper divisors (403063482).

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

331212102 is a wasteful number, since it uses less digits than its factorization.

331212102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 773.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 331212102 is about 18199.2335552902. The cubic root of 331212102 is about 691.8873637493.

Adding to 331212102 its reverse (201212133), we get a palindrome (532424235).

The spelling of 331212102 in words is "three hundred thirty-one million, two hundred twelve thousand, one hundred two".