318854812345 has 4 divisors (see below), whose sum is σ = 382625774820. Its totient is φ = 255083849872.

The previous prime is 318854812343. The next prime is 318854812433. The reversal of 318854812345 is 543218458813.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 543218458813 = 17 ⋅31954026989.

It can be written as a sum of positive squares in 2 ways, for example, as 67809722409 + 251045089936 = 260403^2 + 501044^2 .

It is a cyclic number.

It is not a de Polignac number, because 318854812345 - 2¹ = 318854812343 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 318854812292 and 318854812301.

It is not an unprimeable number, because it can be changed into a prime (318854812343) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31885481230 + ... + 31885481239.

It is an arithmetic number, because the mean of its divisors is an integer number (95656443705).

Almost surely, 2^318854812345 is an apocalyptic number.

It is an amenable number.

318854812345 is a deficient number, since it is larger than the sum of its proper divisors (63770962475).

318854812345 is an equidigital number, since it uses as much as digits as its factorization.

318854812345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63770962474.

The product of its digits is 3686400, while the sum is 52.

The spelling of 318854812345 in words is "three hundred eighteen billion, eight hundred fifty-four million, eight hundred twelve thousand, three hundred forty-five".