201123333231 has 16 divisors (see below), whose sum is σ = 278139000288. Its totient is φ = 129166704000.

The previous prime is 201123333193. The next prime is 201123333233. The reversal of 201123333231 is 132333321102.

It is not a de Polignac number, because 201123333231 - 2¹⁸ = 201123071087 is a prime.

It is a super-2 number, since 2×201123333231² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201123333233) 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, 8958700 + ... + 8981121.

It is an arithmetic number, because the mean of its divisors is an integer number (17383687518).

Almost surely, 2^201123333231 is an apocalyptic number.

201123333231 is a deficient number, since it is larger than the sum of its proper divisors (77015667057).

201123333231 is a wasteful number, since it uses less digits than its factorization.

201123333231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17939962.

The product of its (nonzero) digits is 1944, while the sum is 24.

Adding to 201123333231 its reverse (132333321102), we get a palindrome (333456654333).

The spelling of 201123333231 in words is "two hundred one billion, one hundred twenty-three million, three hundred thirty-three thousand, two hundred thirty-one".