331003131423421 has 4 divisors (see below), whose sum is σ = 331750316822112. Its totient is φ = 330255946024732.

The previous prime is 331003131423413. The next prime is 331003131423431. The reversal of 331003131423421 is 124324131300133.

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 a cyclic number.

It is not a de Polignac number, because 331003131423421 - 2³ = 331003131423413 is a prime.

It is a super-2 number, since 2×331003131423421² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (331003131423401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 373592698681 + ... + 373592699566.

It is an arithmetic number, because the mean of its divisors is an integer number (82937579205528).

Almost surely, 2^{331003131423421} is an apocalyptic number.

It is an amenable number.

331003131423421 is a deficient number, since it is larger than the sum of its proper divisors (747185398691).

331003131423421 is an equidigital number, since it uses as much as digits as its factorization.

331003131423421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 747185398690.

The product of its (nonzero) digits is 15552, while the sum is 31.

Adding to 331003131423421 its reverse (124324131300133), we get a palindrome (455327262723554).

The spelling of 331003131423421 in words is "three hundred thirty-one trillion, three billion, one hundred thirty-one million, four hundred twenty-three thousand, four hundred twenty-one".