201231323 has 4 divisors (see below), whose sum is σ = 207722688. Its totient is φ = 194739960.

The previous prime is 201231307. The next prime is 201231341. The reversal of 201231323 is 323132102.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 323132102 = 2 ⋅161566051.

It is a cyclic number.

It is not a de Polignac number, because 201231323 - 2⁴ = 201231307 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201231343) 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, 3245636 + ... + 3245697.

It is an arithmetic number, because the mean of its divisors is an integer number (51930672).

Almost surely, 2^201231323 is an apocalyptic number.

201231323 is a deficient number, since it is larger than the sum of its proper divisors (6491365).

201231323 is an equidigital number, since it uses as much as digits as its factorization.

201231323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6491364.

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 201231323 is about 14185.6026660837. The cubic root of 201231323 is about 586.0012298700.

Adding to 201231323 its reverse (323132102), we get a palindrome (524363425).

The spelling of 201231323 in words is "two hundred one million, two hundred thirty-one thousand, three hundred twenty-three".