1312054218 has 12 divisors (see below), whose sum is σ = 2842784178. Its totient is φ = 437351400.

The previous prime is 1312054201. The next prime is 1312054231. The reversal of 1312054218 is 8124502131.

1312054218 is a `hidden beast` number, since 1 + 31 + 205 + 421 + 8 = 666.

1312054218 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 793717929 + 518336289 = 28173^2 + 22767^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1312054191 and 1312054200.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 36445933 + ... + 36445968.

Almost surely, 2^1312054218 is an apocalyptic number.

1312054218 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1312054218 is an abundant number, since it is smaller than the sum of its proper divisors (1530729960).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1312054218 is a wasteful number, since it uses less digits than its factorization.

1312054218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72891909 (or 72891906 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

The square root of 1312054218 is about 36222.2889668778. The cubic root of 1312054218 is about 1094.7558146943.

Adding to 1312054218 its reverse (8124502131), we get a palindrome (9436556349).

The spelling of 1312054218 in words is "one billion, three hundred twelve million, fifty-four thousand, two hundred eighteen".