318748356 has 18 divisors (see below), whose sum is σ = 805725102. Its totient is φ = 106249440.

The previous prime is 318748349. The next prime is 318748361. The reversal of 318748356 is 653847813.

318748356 is digitally balanced in base 3, 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., 278222400 + 40525956 = 16680^2 + 6366^2 .

It is a tau number, because it is divible by the number of its divisors (18).

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, 4427025 + ... + 4427096.

Almost surely, 2^318748356 is an apocalyptic number.

318748356 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

318748356 is an abundant number, since it is smaller than the sum of its proper divisors (486976746).

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

318748356 is a wasteful number, since it uses less digits than its factorization.

318748356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8854131 (or 8854126 counting only the distinct ones).

The product of its digits is 483840, while the sum is 45.

The square root of 318748356 is about 17853.5250300886. The cubic root of 318748356 is about 683.0974296278.

The spelling of 318748356 in words is "three hundred eighteen million, seven hundred forty-eight thousand, three hundred fifty-six".