320011231 has 4 divisors (see below), whose sum is σ = 323866872. Its totient is φ = 316155592.

The previous prime is 320011199. The next prime is 320011249. The reversal of 320011231 is 132110023.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 132110023 = 97 ⋅1361959.

It is a cyclic number.

It is not a de Polignac number, because 320011231 - 2⁵ = 320011199 is a prime.

It is a super-2 number, since 2×320011231² = 204814375932270722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320011831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1927696 + ... + 1927861.

It is an arithmetic number, because the mean of its divisors is an integer number (80966718).

Almost surely, 2^320011231 is an apocalyptic number.

320011231 is a deficient number, since it is larger than the sum of its proper divisors (3855641).

320011231 is an equidigital number, since it uses as much as digits as its factorization.

320011231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3855640.

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

The square root of 320011231 is about 17888.8577332372. The cubic root of 320011231 is about 683.9983805520.

Adding to 320011231 its reverse (132110023), we get a palindrome (452121254).

The spelling of 320011231 in words is "three hundred twenty million, eleven thousand, two hundred thirty-one".