1331023117 has 2 divisors, whose sum is σ = 1331023118. Its totient is φ = 1331023116.

The previous prime is 1331023103. The next prime is 1331023151. The reversal of 1331023117 is 7113201331.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 666724041 + 664299076 = 25821^2 + 25774^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1331023117 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1331023157) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 665511558 + 665511559.

It is an arithmetic number, because the mean of its divisors is an integer number (665511559).

Almost surely, 2^1331023117 is an apocalyptic number.

It is an amenable number.

1331023117 is a deficient number, since it is larger than the sum of its proper divisors (1).

1331023117 is an equidigital number, since it uses as much as digits as its factorization.

1331023117 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 378, while the sum is 22.

The square root of 1331023117 is about 36483.1895124316. The cubic root of 1331023117 is about 1100.0063682827.

Adding to 1331023117 its reverse (7113201331), we get a palindrome (8444224448).

The spelling of 1331023117 in words is "one billion, three hundred thirty-one million, twenty-three thousand, one hundred seventeen".