320745130 has 16 divisors (see below), whose sum is σ = 578148480. Its totient is φ = 128118672.

The previous prime is 320745121. The next prime is 320745149. The reversal of 320745130 is 31547023.

It is a junction number, because it is equal to n+sod(n) for n = 320745095 and 320745104.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14790 + ... + 29329.

It is an arithmetic number, because the mean of its divisors is an integer number (36134280).

Almost surely, 2^320745130 is an apocalyptic number.

320745130 is a deficient number, since it is larger than the sum of its proper divisors (257403350).

320745130 is a wasteful number, since it uses less digits than its factorization.

320745130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44853.

The product of its (nonzero) digits is 2520, while the sum is 25.

The square root of 320745130 is about 17909.3587266546. The cubic root of 320745130 is about 684.5208647895.

The spelling of 320745130 in words is "three hundred twenty million, seven hundred forty-five thousand, one hundred thirty".