316138406 has 4 divisors (see below), whose sum is σ = 474207612. Its totient is φ = 158069202.

The previous prime is 316138391. The next prime is 316138411. The reversal of 316138406 is 604831613.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 604831613 = 2383 ⋅253811.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79034600 + ... + 79034603.

It is an arithmetic number, because the mean of its divisors is an integer number (118551903).

Almost surely, 2^316138406 is an apocalyptic number.

316138406 is a deficient number, since it is larger than the sum of its proper divisors (158069206).

316138406 is a wasteful number, since it uses less digits than its factorization.

316138406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158069205.

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 316138406 is about 17780.2813813505. The cubic root of 316138406 is about 681.2278895722.

The spelling of 316138406 in words is "three hundred sixteen million, one hundred thirty-eight thousand, four hundred six".