201023304240331 has 4 divisors (see below), whose sum is σ = 201025477816200. Its totient is φ = 201021130664464.

The previous prime is 201023304240271. The next prime is 201023304240397. The reversal of 201023304240331 is 133042403320102.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 201023304240331 - 2³¹ = 201021156756683 is a prime.

It is a super-2 number, since 2×201023304240331² (a number of 29 digits) contains 22 as substring.

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 201023304240331.

It is not an unprimeable number, because it can be changed into a prime (201023304040331) 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, 1086649201 + ... + 1086834178.

It is an arithmetic number, because the mean of its divisors is an integer number (50256369454050).

Almost surely, 2^{201023304240331} is an apocalyptic number.

201023304240331 is a deficient number, since it is larger than the sum of its proper divisors (2173575869).

201023304240331 is an equidigital number, since it uses as much as digits as its factorization.

201023304240331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2173575868.

The product of its (nonzero) digits is 10368, while the sum is 28.

Adding to 201023304240331 its reverse (133042403320102), we get a palindrome (334065707560433).

The spelling of 201023304240331 in words is "two hundred one trillion, twenty-three billion, three hundred four million, two hundred forty thousand, three hundred thirty-one".