331131030102 has 64 divisors (see below), whose sum is σ = 751796259840. Its totient is φ = 107986415328.

The previous prime is 331131030091. The next prime is 331131030103. The reversal of 331131030102 is 201030131133.

It is a happy number.

331131030102 is a `hidden beast` number, since 3 + 311 + 310 + 30 + 10 + 2 = 666.

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 (331131030103) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6846268 + ... + 6894464.

It is an arithmetic number, because the mean of its divisors is an integer number (11746816560).

Almost surely, 2^331131030102 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 331131030102, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (375898129920).

331131030102 is an abundant number, since it is smaller than the sum of its proper divisors (420665229738).

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

331131030102 is a wasteful number, since it uses less digits than its factorization.

331131030102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50962 (or 50956 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 18.

Adding to 331131030102 its reverse (201030131133), we get a palindrome (532161161235).

The spelling of 331131030102 in words is "three hundred thirty-one billion, one hundred thirty-one million, thirty thousand, one hundred two".