331382187421 has 8 divisors (see below), whose sum is σ = 349858446080. Its totient is φ = 313009437888.

The previous prime is 331382187401. The next prime is 331382187443. The reversal of 331382187421 is 124781283133.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 331382187421 - 2⁹ = 331382186909 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (331382187401) 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 7 ways as a sum of consecutive naturals, for example, 25870701 + ... + 25883506.

It is an arithmetic number, because the mean of its divisors is an integer number (43732305760).

Almost surely, 2^331382187421 is an apocalyptic number.

It is an amenable number.

331382187421 is a deficient number, since it is larger than the sum of its proper divisors (18476258659).

331382187421 is a wasteful number, since it uses less digits than its factorization.

331382187421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51754563.

The product of its digits is 193536, while the sum is 43.

The spelling of 331382187421 in words is "three hundred thirty-one billion, three hundred eighty-two million, one hundred eighty-seven thousand, four hundred twenty-one".