318877161121 has 2 divisors, whose sum is σ = 318877161122. Its totient is φ = 318877161120.

The previous prime is 318877161049. The next prime is 318877161149. The reversal of 318877161121 is 121161778813.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 318163683600 + 713477521 = 564060^2 + 26711^2 .

It is a cyclic number.

It is not a de Polignac number, because 318877161121 - 2¹³ = 318877152929 is a prime.

It is not a weakly prime, because it can be changed into another prime (318877161151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 159438580560 + 159438580561.

It is an arithmetic number, because the mean of its divisors is an integer number (159438580561).

Almost surely, 2^318877161121 is an apocalyptic number.

It is an amenable number.

318877161121 is a deficient number, since it is larger than the sum of its proper divisors (1).

318877161121 is an equidigital number, since it uses as much as digits as its factorization.

318877161121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 112896, while the sum is 46.

The spelling of 318877161121 in words is "three hundred eighteen billion, eight hundred seventy-seven million, one hundred sixty-one thousand, one hundred twenty-one".