231303132243 has 6 divisors (see below), whose sum is σ = 334104524364. Its totient is φ = 154202088156.

The previous prime is 231303132227. The next prime is 231303132257. The reversal of 231303132243 is 342231303132.

231303132243 is a `hidden beast` number, since 2 + 31 + 303 + 1 + 322 + 4 + 3 = 666.

It is not a de Polignac number, because 231303132243 - 2⁴ = 231303132227 is a prime.

It is a super-2 number, since 2×231303132243² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (231303132283) 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 5 ways as a sum of consecutive naturals, for example, 12850174005 + ... + 12850174022.

It is an arithmetic number, because the mean of its divisors is an integer number (55684087394).

Almost surely, 2^231303132243 is an apocalyptic number.

231303132243 is a deficient number, since it is larger than the sum of its proper divisors (102801392121).

231303132243 is a wasteful number, since it uses less digits than its factorization.

231303132243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25700348033 (or 25700348030 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 27.

Adding to 231303132243 its reverse (342231303132), we get a palindrome (573534435375).

The spelling of 231303132243 in words is "two hundred thirty-one billion, three hundred three million, one hundred thirty-two thousand, two hundred forty-three".