331111121323 has 4 divisors (see below), whose sum is σ = 331112788048. Its totient is φ = 331109454600.

The previous prime is 331111121273. The next prime is 331111121347. The reversal of 331111121323 is 323121111133.

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

It is a cyclic number.

It is not a de Polignac number, because 331111121323 - 2²¹ = 331109024171 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 331111121294 and 331111121303.

It is not an unprimeable number, because it can be changed into a prime (331111127323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 487536 + ... + 948637.

It is an arithmetic number, because the mean of its divisors is an integer number (82778197012).

Almost surely, 2^331111121323 is an apocalyptic number.

331111121323 is a deficient number, since it is larger than the sum of its proper divisors (1666725).

331111121323 is a wasteful number, since it uses less digits than its factorization.

331111121323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1666724.

The product of its digits is 324, while the sum is 22.

Adding to 331111121323 its reverse (323121111133), we get a palindrome (654232232456).

The spelling of 331111121323 in words is "three hundred thirty-one billion, one hundred eleven million, one hundred twenty-one thousand, three hundred twenty-three".