331121223 has 16 divisors (see below), whose sum is σ = 519406560. Its totient is φ = 207762048.

The previous prime is 331121221. The next prime is 331121239. The reversal of 331121223 is 322121133.

It is not a de Polignac number, because 331121223 - 2¹ = 331121221 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 331121196 and 331121205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (331121221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 360240 + ... + 361157.

It is an arithmetic number, because the mean of its divisors is an integer number (32462910).

Almost surely, 2^331121223 is an apocalyptic number.

331121223 is a deficient number, since it is larger than the sum of its proper divisors (188285337).

331121223 is a wasteful number, since it uses less digits than its factorization.

331121223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 721423 (or 721417 counting only the distinct ones).

The product of its digits is 216, while the sum is 18.

The square root of 331121223 is about 18196.7366030286. The cubic root of 331121223 is about 691.8240772298.

Adding to 331121223 its reverse (322121133), we get a palindrome (653242356).

The spelling of 331121223 in words is "three hundred thirty-one million, one hundred twenty-one thousand, two hundred twenty-three".