231313302331 has 8 divisors (see below), whose sum is σ = 247870811664. Its totient is φ = 215083664640.

The previous prime is 231313302293. The next prime is 231313302391. The reversal of 231313302331 is 133203313132.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 231313302331 - 2¹³ = 231313294139 is a prime.

It is a super-2 number, since 2×231313302331² (a number of 24 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 = 231313302296 and 231313302305.

It is not an unprimeable number, because it can be changed into a prime (231313302391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 81966450 + ... + 81969271.

It is an arithmetic number, because the mean of its divisors is an integer number (30983851458).

Almost surely, 2^231313302331 is an apocalyptic number.

231313302331 is a deficient number, since it is larger than the sum of its proper divisors (16557509333).

231313302331 is a wasteful number, since it uses less digits than its factorization.

231313302331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163935821.

The product of its (nonzero) digits is 2916, while the sum is 25.

Adding to 231313302331 its reverse (133203313132), we get a palindrome (364516615463).

The spelling of 231313302331 in words is "two hundred thirty-one billion, three hundred thirteen million, three hundred two thousand, three hundred thirty-one".