201042331331 has 4 divisors (see below), whose sum is σ = 201246851472. Its totient is φ = 200837811192.

The previous prime is 201042331309. The next prime is 201042331349. The reversal of 201042331331 is 133133240102.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 133133240102 = 2 ⋅66566620051.

It is a cyclic number.

It is not a de Polignac number, because 201042331331 - 2⁶ = 201042331267 is a prime.

It is a super-2 number, since 2×201042331331² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 201042331297 and 201042331306.

It is not an unprimeable number, because it can be changed into a prime (201042331361) 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, 102258596 + ... + 102260561.

It is an arithmetic number, because the mean of its divisors is an integer number (50311712868).

Almost surely, 2^201042331331 is an apocalyptic number.

201042331331 is a deficient number, since it is larger than the sum of its proper divisors (204520141).

201042331331 is an equidigital number, since it uses as much as digits as its factorization.

201042331331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 204520140.

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 201042331331 its reverse (133133240102), we get a palindrome (334175571433).

The spelling of 201042331331 in words is "two hundred one billion, forty-two million, three hundred thirty-one thousand, three hundred thirty-one".