231303001331 has 16 divisors (see below), whose sum is σ = 233525136768. Its totient is φ = 229093488000.

The previous prime is 231303001273. The next prime is 231303001337. The reversal of 231303001331 is 133100303132.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-231303001331 is a prime.

It is a super-2 number, since 2×231303001331² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231303001337) 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, 81129056 + ... + 81131906.

It is an arithmetic number, because the mean of its divisors is an integer number (14595321048).

Almost surely, 2^231303001331 is an apocalyptic number.

231303001331 is a deficient number, since it is larger than the sum of its proper divisors (2222135437).

231303001331 is a wasteful number, since it uses less digits than its factorization.

231303001331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4802.

The product of its (nonzero) digits is 486, while the sum is 20.

Adding to 231303001331 its reverse (133100303132), we get a palindrome (364403304463).

The spelling of 231303001331 in words is "two hundred thirty-one billion, three hundred three million, one thousand, three hundred thirty-one".