331340140523221 has 16 divisors (see below), whose sum is σ = 346867876712448. Its totient is φ = 315906769134000.

The previous prime is 331340140523101. The next prime is 331340140523291. The reversal of 331340140523221 is 122325041043133.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-331340140523221 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (331340140523291) 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 15 ways as a sum of consecutive naturals, for example, 6135496 + ... + 26463646.

It is an arithmetic number, because the mean of its divisors is an integer number (21679242294528).

Almost surely, 2^{331340140523221} is an apocalyptic number.

It is an amenable number.

331340140523221 is a deficient number, since it is larger than the sum of its proper divisors (15527736189227).

331340140523221 is a wasteful number, since it uses less digits than its factorization.

331340140523221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20330472.

The product of its (nonzero) digits is 51840, while the sum is 34.

Adding to 331340140523221 its reverse (122325041043133), we get a palindrome (453665181566354).

The spelling of 331340140523221 in words is "three hundred thirty-one trillion, three hundred forty billion, one hundred forty million, five hundred twenty-three thousand, two hundred twenty-one".