201231023323 has 16 divisors (see below), whose sum is σ = 239935979520. Its totient is φ = 166622198400.

The previous prime is 201231023309. The next prime is 201231023407. The reversal of 201231023323 is 323320132102.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-201231023323 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 201231023294 and 201231023303.

It is not an unprimeable number, because it can be changed into a prime (201231023023) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17350683 + ... + 17362276.

It is an arithmetic number, because the mean of its divisors is an integer number (14995998720).

Almost surely, 2^201231023323 is an apocalyptic number.

201231023323 is a deficient number, since it is larger than the sum of its proper divisors (38704956197).

201231023323 is a wasteful number, since it uses less digits than its factorization.

201231023323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34713018.

The product of its (nonzero) digits is 1296, while the sum is 22.

Adding to 201231023323 its reverse (323320132102), we get a palindrome (524551155425).

The spelling of 201231023323 in words is "two hundred one billion, two hundred thirty-one million, twenty-three thousand, three hundred twenty-three".