320011123 has 4 divisors (see below), whose sum is σ = 322454088. Its totient is φ = 317568160.

The previous prime is 320011099. The next prime is 320011157. The reversal of 320011123 is 321110023.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 321110023 = 13 ⋅24700771.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-320011123 is a prime.

It is a super-2 number, since 2×320011123² = 204814237687442258, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (320018123) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 1221286 + ... + 1221547.

It is an arithmetic number, because the mean of its divisors is an integer number (80613522).

Almost surely, 2^320011123 is an apocalyptic number.

320011123 is a deficient number, since it is larger than the sum of its proper divisors (2442965).

320011123 is a wasteful number, since it uses less digits than its factorization.

320011123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2442964.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 320011123 is about 17888.8547145981. The cubic root of 320011123 is about 683.9983036049.

Adding to 320011123 its reverse (321110023), we get a palindrome (641121146).

It can be divided in two parts, 32001 and 1123, that added together give a square (33124 = 182²).

The spelling of 320011123 in words is "three hundred twenty million, eleven thousand, one hundred twenty-three".