201231211331233 has 4 divisors (see below), whose sum is σ = 201234678322608. Its totient is φ = 201227744339860.

The previous prime is 201231211331231. The next prime is 201231211331243. The reversal of 201231211331233 is 332133112132102.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 201231211331233 - 2¹ = 201231211331231 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201231211331231) 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, 1733408623 + ... + 1733524708.

It is an arithmetic number, because the mean of its divisors is an integer number (50308669580652).

Almost surely, 2^{201231211331233} is an apocalyptic number.

It is an amenable number.

201231211331233 is a deficient number, since it is larger than the sum of its proper divisors (3466991375).

201231211331233 is an equidigital number, since it uses as much as digits as its factorization.

201231211331233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3466991374.

The product of its (nonzero) digits is 3888, while the sum is 28.

Adding to 201231211331233 its reverse (332133112132102), we get a palindrome (533364323463335).

The spelling of 201231211331233 in words is "two hundred one trillion, two hundred thirty-one billion, two hundred eleven million, three hundred thirty-one thousand, two hundred thirty-three".