331121423 has 4 divisors (see below), whose sum is σ = 331955880. Its totient is φ = 330286968.

The previous prime is 331121419. The next prime is 331121467. The reversal of 331121423 is 324121133.

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 331121423 - 2² = 331121419 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 331121395 and 331121404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (331121723) 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, 416633 + ... + 417426.

It is an arithmetic number, because the mean of its divisors is an integer number (82988970).

Almost surely, 2^331121423 is an apocalyptic number.

331121423 is a deficient number, since it is larger than the sum of its proper divisors (834457).

331121423 is an equidigital number, since it uses as much as digits as its factorization.

331121423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 834456.

The product of its digits is 432, while the sum is 20.

The square root of 331121423 is about 18196.7420985186. The cubic root of 331121423 is about 691.8242165189.

Adding to 331121423 its reverse (324121133), we get a palindrome (655242556).

The spelling of 331121423 in words is "three hundred thirty-one million, one hundred twenty-one thousand, four hundred twenty-three".