331131321201 has 4 divisors (see below), whose sum is σ = 441508428272. Its totient is φ = 220754214132.

The previous prime is 331131321193. The next prime is 331131321203. The reversal of 331131321201 is 102123131133.

It is a happy number.

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 not a de Polignac number, because 331131321201 - 2³ = 331131321193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (331131321203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55188553531 + ... + 55188553536.

It is an arithmetic number, because the mean of its divisors is an integer number (110377107068).

Almost surely, 2^331131321201 is an apocalyptic number.

It is an amenable number.

331131321201 is a deficient number, since it is larger than the sum of its proper divisors (110377107071).

331131321201 is a wasteful number, since it uses less digits than its factorization.

331131321201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110377107070.

The product of its (nonzero) digits is 324, while the sum is 21.

Adding to 331131321201 its reverse (102123131133), we get a palindrome (433254452334).

The spelling of 331131321201 in words is "three hundred thirty-one billion, one hundred thirty-one million, three hundred twenty-one thousand, two hundred one".