331142331220321 has 4 divisors (see below), whose sum is σ = 331341454692352. Its totient is φ = 330943207748292.

The previous prime is 331142331220297. The next prime is 331142331220361. The reversal of 331142331220321 is 123022133241133.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 331142331220321 - 2³⁵ = 331107971481953 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (331142331220361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 99561733521 + ... + 99561736846.

It is an arithmetic number, because the mean of its divisors is an integer number (82835363673088).

Almost surely, 2^{331142331220321} is an apocalyptic number.

It is an amenable number.

331142331220321 is a deficient number, since it is larger than the sum of its proper divisors (199123472031).

331142331220321 is a wasteful number, since it uses less digits than its factorization.

331142331220321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199123472030.

The product of its (nonzero) digits is 15552, while the sum is 31.

Adding to 331142331220321 its reverse (123022133241133), we get a palindrome (454164464461454).

The spelling of 331142331220321 in words is "three hundred thirty-one trillion, one hundred forty-two billion, three hundred thirty-one million, two hundred twenty thousand, three hundred twenty-one".