318526121 has 2 divisors, whose sum is σ = 318526122. Its totient is φ = 318526120.

The previous prime is 318526067. The next prime is 318526123. The reversal of 318526121 is 121625813.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 318122896 + 403225 = 17836^2 + 635^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-318526121 is a prime.

Together with 318526123, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (318526123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 159263060 + 159263061.

It is an arithmetic number, because the mean of its divisors is an integer number (159263061).

Almost surely, 2^318526121 is an apocalyptic number.

It is an amenable number.

318526121 is a deficient number, since it is larger than the sum of its proper divisors (1).

318526121 is an equidigital number, since it uses as much as digits as its factorization.

318526121 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2880, while the sum is 29.

The square root of 318526121 is about 17847.3001039373. The cubic root of 318526121 is about 682.9386382710.

It can be divided in two parts, 31852 and 6121, that added together give a palindrome (37973).

The spelling of 318526121 in words is "three hundred eighteen million, five hundred twenty-six thousand, one hundred twenty-one".