331002113 has 4 divisors (see below), whose sum is σ = 356463828. Its totient is φ = 305540400.

The previous prime is 331002109. The next prime is 331002137. The reversal of 331002113 is 311200133.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 311200133 = 1031 ⋅301843.

It can be written as a sum of positive squares in 2 ways, for example, as 204146944 + 126855169 = 14288^2 + 11263^2 .

It is a cyclic number.

It is not a de Polignac number, because 331002113 - 2² = 331002109 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (331002103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12730838 + ... + 12730863.

It is an arithmetic number, because the mean of its divisors is an integer number (89115957).

Almost surely, 2^331002113 is an apocalyptic number.

It is an amenable number.

331002113 is a deficient number, since it is larger than the sum of its proper divisors (25461715).

331002113 is a wasteful number, since it uses less digits than its factorization.

331002113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25461714.

The product of its (nonzero) digits is 54, while the sum is 14.

The square root of 331002113 is about 18193.4634690594. The cubic root of 331002113 is about 691.7411136073.

Adding to 331002113 its reverse (311200133), we get a palindrome (642202246).

The spelling of 331002113 in words is "three hundred thirty-one million, two thousand, one hundred thirteen".