320738023 has 4 divisors (see below), whose sum is σ = 321896200. Its totient is φ = 319579848.

The previous prime is 320738009. The next prime is 320738053. The reversal of 320738023 is 320837023.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 320837023 = 13 ⋅24679771.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-320738023 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 320737982 and 320738000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320738053) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 578673 + ... + 579226.

It is an arithmetic number, because the mean of its divisors is an integer number (80474050).

Almost surely, 2^320738023 is an apocalyptic number.

320738023 is a deficient number, since it is larger than the sum of its proper divisors (1158177).

320738023 is a wasteful number, since it uses less digits than its factorization.

320738023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1158176.

The product of its (nonzero) digits is 6048, while the sum is 28.

The square root of 320738023 is about 17909.1603097409. The cubic root of 320738023 is about 684.5158089312.

The spelling of 320738023 in words is "three hundred twenty million, seven hundred thirty-eight thousand, twenty-three".