318172082 has 4 divisors (see below), whose sum is σ = 477258126. Its totient is φ = 159086040.

The previous prime is 318172069. The next prime is 318172103. The reversal of 318172082 is 280271813.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 280271813 = 23 ⋅12185731.

It can be written as a sum of positive squares in only one way, i.e., 173475241 + 144696841 = 13171^2 + 12029^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79543019 + ... + 79543022.

Almost surely, 2^318172082 is an apocalyptic number.

318172082 is a deficient number, since it is larger than the sum of its proper divisors (159086044).

318172082 is a wasteful number, since it uses less digits than its factorization.

318172082 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159086043.

The product of its (nonzero) digits is 5376, while the sum is 32.

The square root of 318172082 is about 17837.3787872546. The cubic root of 318172082 is about 682.6855176912.

The spelling of 318172082 in words is "three hundred eighteen million, one hundred seventy-two thousand, eighty-two".