331431110201 has 4 divisors (see below), whose sum is σ = 340388707812. Its totient is φ = 322473512592.

The previous prime is 331431110167. The next prime is 331431110209. The reversal of 331431110201 is 102011134133.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 102011134133 = 17 ⋅6000654949.

It can be written as a sum of positive squares in 2 ways, for example, as 132367902976 + 199063207225 = 363824^2 + 446165^2 .

It is a cyclic number.

It is not a de Polignac number, because 331431110201 - 2²⁶ = 331364001337 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (331431110209) 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, 4478798750 + ... + 4478798823.

It is an arithmetic number, because the mean of its divisors is an integer number (85097176953).

Almost surely, 2^331431110201 is an apocalyptic number.

It is an amenable number.

331431110201 is a deficient number, since it is larger than the sum of its proper divisors (8957597611).

331431110201 is an equidigital number, since it uses as much as digits as its factorization.

331431110201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8957597610.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 331431110201 its reverse (102011134133), we get a palindrome (433442244334).

The spelling of 331431110201 in words is "three hundred thirty-one billion, four hundred thirty-one million, one hundred ten thousand, two hundred one".