318854481081 has 4 divisors (see below), whose sum is σ = 425139308112. Its totient is φ = 212569654052.

The previous prime is 318854481079. The next prime is 318854481089. The reversal of 318854481081 is 180184458813.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 180184458813 = 3 ⋅60061486271.

It is a cyclic number.

It is not a de Polignac number, because 318854481081 - 2¹ = 318854481079 is a prime.

It is a super-2 number, since 2×318854481081² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (318854481089) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53142413511 + ... + 53142413516.

It is an arithmetic number, because the mean of its divisors is an integer number (106284827028).

Almost surely, 2^318854481081 is an apocalyptic number.

It is an amenable number.

318854481081 is a deficient number, since it is larger than the sum of its proper divisors (106284827031).

318854481081 is a wasteful number, since it uses less digits than its factorization.

318854481081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106284827030.

The product of its (nonzero) digits is 983040, while the sum is 51.

The spelling of 318854481081 in words is "three hundred eighteen billion, eight hundred fifty-four million, four hundred eighty-one thousand, eighty-one".