231303022331 has 4 divisors (see below), whose sum is σ = 235223412600. Its totient is φ = 227382632064.

The previous prime is 231303022319. The next prime is 231303022351. The reversal of 231303022331 is 133220303132.

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 231303022331 - 2⁶ = 231303022267 is a prime.

It is a super-2 number, since 2×231303022331² (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 = 231303022297 and 231303022306.

It is not an unprimeable number, because it can be changed into a prime (231303022351) 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 3 ways as a sum of consecutive naturals, for example, 1960195046 + ... + 1960195163.

It is an arithmetic number, because the mean of its divisors is an integer number (58805853150).

Almost surely, 2^231303022331 is an apocalyptic number.

231303022331 is a deficient number, since it is larger than the sum of its proper divisors (3920390269).

231303022331 is an equidigital number, since it uses as much as digits as its factorization.

231303022331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3920390268.

The product of its (nonzero) digits is 1944, while the sum is 23.

Adding to 231303022331 its reverse (133220303132), we get a palindrome (364523325463).

The spelling of 231303022331 in words is "two hundred thirty-one billion, three hundred three million, twenty-two thousand, three hundred thirty-one".