331145223 has 8 divisors (see below), whose sum is σ = 442800768. Its totient is φ = 220126584.

The previous prime is 331145209. The next prime is 331145231. The reversal of 331145223 is 322541133.

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

It is not a de Polignac number, because 331145223 - 2⁸ = 331144967 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 331145193 and 331145202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (331145263) 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, 158011 + ... + 160092.

It is an arithmetic number, because the mean of its divisors is an integer number (55350096).

Almost surely, 2^331145223 is an apocalyptic number.

331145223 is a deficient number, since it is larger than the sum of its proper divisors (111655545).

331145223 is a wasteful number, since it uses less digits than its factorization.

331145223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 318453.

The product of its digits is 2160, while the sum is 24.

The square root of 331145223 is about 18197.3960499847. The cubic root of 331145223 is about 691.8407915281.

Adding to 331145223 its reverse (322541133), we get a palindrome (653686356).

The spelling of 331145223 in words is "three hundred thirty-one million, one hundred forty-five thousand, two hundred twenty-three".