331425031331 has 4 divisors (see below), whose sum is σ = 331562497464. Its totient is φ = 331287565200.

The previous prime is 331425031321. The next prime is 331425031337. The reversal of 331425031331 is 133130524133.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-331425031331 is a prime.

It is a super-2 number, since 2×331425031331² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 331425031294 and 331425031303.

It is not an unprimeable number, because it can be changed into a prime (331425031337) 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, 68729450 + ... + 68734271.

It is an arithmetic number, because the mean of its divisors is an integer number (82890624366).

Almost surely, 2^331425031331 is an apocalyptic number.

331425031331 is a deficient number, since it is larger than the sum of its proper divisors (137466133).

331425031331 is a wasteful number, since it uses less digits than its factorization.

331425031331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137466132.

The product of its (nonzero) digits is 9720, while the sum is 29.

Adding to 331425031331 its reverse (133130524133), we get a palindrome (464555555464).

The spelling of 331425031331 in words is "three hundred thirty-one billion, four hundred twenty-five million, thirty-one thousand, three hundred thirty-one".