331001334020421 has 32 divisors (see below), whose sum is σ = 497156911056000. Its totient is φ = 217627249682304.

The previous prime is 331001334020417. The next prime is 331001334020471. The reversal of 331001334020421 is 124020433100133.

It is a happy number.

331001334020421 is a `hidden beast` number, since 3 + 3 + 100 + 1 + 334 + 0 + 204 + 21 = 666.

It is not a de Polignac number, because 331001334020421 - 2² = 331001334020417 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (331001334020471) 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 31 ways as a sum of consecutive naturals, for example, 176115415 + ... + 177984948.

It is an arithmetic number, because the mean of its divisors is an integer number (15536153470500).

Almost surely, 2^{331001334020421} is an apocalyptic number.

It is an amenable number.

331001334020421 is a deficient number, since it is larger than the sum of its proper divisors (166155577035579).

331001334020421 is a wasteful number, since it uses less digits than its factorization.

331001334020421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 354100850 (or 354100844 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 27.

Adding to 331001334020421 its reverse (124020433100133), we get a palindrome (455021767120554).

The spelling of 331001334020421 in words is "three hundred thirty-one trillion, one billion, three hundred thirty-four million, twenty thousand, four hundred twenty-one".