201231031323 has 8 divisors (see below), whose sum is σ = 306637762048. Its totient is φ = 114989160744.

The previous prime is 201231031303. The next prime is 201231031357. The reversal of 201231031323 is 323130132102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 201231031323 - 2¹⁴ = 201231014939 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 9582430063 = 201231031323 / (2 + 0 + 1 + 2 + 3 + 1 + 0 + 3 + 1 + 3 + 2 + 3).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 201231031323.

It is not an unprimeable number, because it can be changed into a prime (201231031303) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4791215011 + ... + 4791215052.

It is an arithmetic number, because the mean of its divisors is an integer number (38329720256).

Almost surely, 2^201231031323 is an apocalyptic number.

201231031323 is a deficient number, since it is larger than the sum of its proper divisors (105406730725).

201231031323 is an equidigital number, since it uses as much as digits as its factorization.

201231031323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9582430073.

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 201231031323 its reverse (323130132102), we get a palindrome (524361163425).

The spelling of 201231031323 in words is "two hundred one billion, two hundred thirty-one million, thirty-one thousand, three hundred twenty-three".