331302021132 has 24 divisors (see below), whose sum is σ = 797974761472. Its totient is φ = 106871619600.

The previous prime is 331302021073. The next prime is 331302021151. The reversal of 331302021132 is 231120203133.

It is a super-2 number, since 2×331302021132² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 331302021099 and 331302021108.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 445298044 + ... + 445298787.

Almost surely, 2^331302021132 is an apocalyptic number.

It is an amenable number.

331302021132 is an abundant number, since it is smaller than the sum of its proper divisors (466672740340).

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

331302021132 is a wasteful number, since it uses less digits than its factorization.

331302021132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 890596869 (or 890596867 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 331302021132 its reverse (231120203133), we get a palindrome (562422224265).

The spelling of 331302021132 in words is "three hundred thirty-one billion, three hundred two million, twenty-one thousand, one hundred thirty-two".