331242113 has 4 divisors (see below), whose sum is σ = 345643968. Its totient is φ = 316840260.

The previous prime is 331242101. The next prime is 331242169. The reversal of 331242113 is 311242133.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 311242133 = 1301 ⋅239233.

It is a cyclic number.

It is not a de Polignac number, because 331242113 - 2¹⁰ = 331241089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (331242173) 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, 7200893 + ... + 7200938.

It is an arithmetic number, because the mean of its divisors is an integer number (86410992).

Almost surely, 2^331242113 is an apocalyptic number.

It is an amenable number.

331242113 is a deficient number, since it is larger than the sum of its proper divisors (14401855).

331242113 is a wasteful number, since it uses less digits than its factorization.

331242113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14401854.

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

The square root of 331242113 is about 18200.0580493580. The cubic root of 331242113 is about 691.9082603334.

Adding to 331242113 its sum of digits (20), we get a palindrome (331242133).

Adding to 331242113 its reverse (311242133), we get a palindrome (642484246).

The spelling of 331242113 in words is "three hundred thirty-one million, two hundred forty-two thousand, one hundred thirteen".