331311423 has 8 divisors (see below), whose sum is σ = 442799536. Its totient is φ = 220348800.

The previous prime is 331311401. The next prime is 331311443. The reversal of 331311423 is 324113133.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 331311423 - 2⁵ = 331311391 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 331311423.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (331311443) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 129898 + ... + 132423.

It is an arithmetic number, because the mean of its divisors is an integer number (55349942).

Almost surely, 2^331311423 is an apocalyptic number.

331311423 is a deficient number, since it is larger than the sum of its proper divisors (111488113).

331311423 is a wasteful number, since it uses less digits than its factorization.

331311423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 262745.

The product of its digits is 648, while the sum is 21.

The square root of 331311423 is about 18201.9620645688. The cubic root of 331311423 is about 691.9565158894.

Adding to 331311423 its reverse (324113133), we get a palindrome (655424556).

The spelling of 331311423 in words is "three hundred thirty-one million, three hundred eleven thousand, four hundred twenty-three".