318128445 has 32 divisors (see below), whose sum is σ = 567191040. Its totient is φ = 169179840.

The previous prime is 318128411. The next prime is 318128467. The reversal of 318128445 is 544821813.

It is not a de Polignac number, because 318128445 - 2⁹ = 318127933 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 46335 + ... + 52755.

It is an arithmetic number, because the mean of its divisors is an integer number (17724720).

Almost surely, 2^318128445 is an apocalyptic number.

It is an amenable number.

318128445 is a deficient number, since it is larger than the sum of its proper divisors (249062595).

318128445 is a wasteful number, since it uses less digits than its factorization.

318128445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6802 (or 6796 counting only the distinct ones).

The product of its digits is 30720, while the sum is 36.

The square root of 318128445 is about 17836.1555555002. The cubic root of 318128445 is about 682.6543063734.

It can be divided in two parts, 3181 and 28445, that added together give a triangular number (31626 = T₂₅₁).

The spelling of 318128445 in words is "three hundred eighteen million, one hundred twenty-eight thousand, four hundred forty-five".