201331203123 has 8 divisors (see below), whose sum is σ = 268444029888. Its totient is φ = 134219589224.

The previous prime is 201331203077. The next prime is 201331203137. The reversal of 201331203123 is 321302133102.

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

It is a cyclic number.

It is not a de Polignac number, because 201331203123 - 2¹⁰ = 201331202099 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 201331203123.

It is not an unprimeable number, because it can be changed into a prime (201331203163) 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, 206536 + ... + 667322.

It is an arithmetic number, because the mean of its divisors is an integer number (33555503736).

Almost surely, 2^201331203123 is an apocalyptic number.

201331203123 is a deficient number, since it is larger than the sum of its proper divisors (67112826765).

201331203123 is a wasteful number, since it uses less digits than its factorization.

201331203123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 606433.

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

Adding to 201331203123 its reverse (321302133102), we get a palindrome (522633336225).

The spelling of 201331203123 in words is "two hundred one billion, three hundred thirty-one million, two hundred three thousand, one hundred twenty-three".