331648117 has 2 divisors, whose sum is σ = 331648118. Its totient is φ = 331648116.

The previous prime is 331648081. The next prime is 331648127. The reversal of 331648117 is 711846133.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 178730161 + 152917956 = 13369^2 + 12366^2 .

It is an emirp because it is prime and its reverse (711846133) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-331648117 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (331648127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 165824058 + 165824059.

It is an arithmetic number, because the mean of its divisors is an integer number (165824059).

Almost surely, 2^331648117 is an apocalyptic number.

It is an amenable number.

331648117 is a deficient number, since it is larger than the sum of its proper divisors (1).

331648117 is an equidigital number, since it uses as much as digits as its factorization.

331648117 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12096, while the sum is 34.

The square root of 331648117 is about 18211.2085540746. The cubic root of 331648117 is about 692.1908359427.

The spelling of 331648117 in words is "three hundred thirty-one million, six hundred forty-eight thousand, one hundred seventeen".