331124213 has 6 divisors (see below), whose sum is σ = 385185366. Its totient is φ = 283820712.

The previous prime is 331124207. The next prime is 331124243. The reversal of 331124213 is 312421133.

It can be written as a sum of positive squares in only one way, i.e., 321377329 + 9746884 = 17927^2 + 3122^2 .

It is not a de Polignac number, because 331124213 - 2⁶ = 331124149 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (331124243) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3378770 + ... + 3378867.

It is an arithmetic number, because the mean of its divisors is an integer number (64197561).

Almost surely, 2^331124213 is an apocalyptic number.

It is an amenable number.

331124213 is a deficient number, since it is larger than the sum of its proper divisors (54061153).

331124213 is an equidigital number, since it uses as much as digits as its factorization.

331124213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6757651 (or 6757644 counting only the distinct ones).

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

The square root of 331124213 is about 18196.8187604317. The cubic root of 331124213 is about 691.8261595968.

Adding to 331124213 its reverse (312421133), we get a palindrome (643545346).

The spelling of 331124213 in words is "three hundred thirty-one million, one hundred twenty-four thousand, two hundred thirteen".