331575401421 has 64 divisors (see below), whose sum is σ = 566030868480. Its totient is φ = 189949536000.

The previous prime is 331575401413. The next prime is 331575401429. The reversal of 331575401421 is 124104575133.

331575401421 is a `hidden beast` number, since 3 + 3 + 1 + 575 + 40 + 1 + 42 + 1 = 666.

It is an interprime number because it is at equal distance from previous prime (331575401413) and next prime (331575401429).

It is not a de Polignac number, because 331575401421 - 2³ = 331575401413 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (331575401429) 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 63 ways as a sum of consecutive naturals, for example, 22860 + ... + 814661.

It is an arithmetic number, because the mean of its divisors is an integer number (8844232320).

Almost surely, 2^331575401421 is an apocalyptic number.

331575401421 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

331575401421 is a deficient number, since it is larger than the sum of its proper divisors (234455467059).

331575401421 is a wasteful number, since it uses less digits than its factorization.

331575401421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 837615 (or 837609 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 36.

Adding to 331575401421 its reverse (124104575133), we get a palindrome (455679976554).

The spelling of 331575401421 in words is "three hundred thirty-one billion, five hundred seventy-five million, four hundred one thousand, four hundred twenty-one".