331000003123 has 4 divisors (see below), whose sum is σ = 350470591560. Its totient is φ = 311529414688.

The previous prime is 331000003069. The next prime is 331000003141. The reversal of 331000003123 is 321300000133.

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-331000003123 is a prime.

It is a super-2 number, since 2×331000003123² (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 = 331000003097 and 331000003106.

It is not an unprimeable number, because it can be changed into a prime (331000003163) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9735294193 + ... + 9735294226.

It is an arithmetic number, because the mean of its divisors is an integer number (87617647890).

Almost surely, 2^331000003123 is an apocalyptic number.

331000003123 is a deficient number, since it is larger than the sum of its proper divisors (19470588437).

331000003123 is a wasteful number, since it uses less digits than its factorization.

331000003123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19470588436.

The product of its (nonzero) digits is 162, while the sum is 16.

Adding to 331000003123 its reverse (321300000133), we get a palindrome (652300003256).

The spelling of 331000003123 in words is "three hundred thirty-one billion, three thousand, one hundred twenty-three".