331312103212321 has 24 divisors (see below), whose sum is σ = 426715823838816. Its totient is φ = 254312062139520.

The previous prime is 331312103212253. The next prime is 331312103212373. The reversal of 331312103212321 is 123212301213133.

It is not a de Polignac number, because 331312103212321 - 2²³ = 331312094823713 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 331312103212321.

It is not an unprimeable number, because it can be changed into a prime (331312103212021) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4587122296 + ... + 4587194521.

It is an arithmetic number, because the mean of its divisors is an integer number (17779825993284).

Almost surely, 2^{331312103212321} is an apocalyptic number.

It is an amenable number.

331312103212321 is a deficient number, since it is larger than the sum of its proper divisors (95403720626495).

331312103212321 is a wasteful number, since it uses less digits than its factorization.

331312103212321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9174316909 (or 9174316902 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 28.

Adding to 331312103212321 its reverse (123212301213133), we get a palindrome (454524404425454).

The spelling of 331312103212321 in words is "three hundred thirty-one trillion, three hundred twelve billion, one hundred three million, two hundred twelve thousand, three hundred twenty-one".