231233101231231 has 4 divisors (see below), whose sum is σ = 252254292252264. Its totient is φ = 210211910210200.

The previous prime is 231233101231229. The next prime is 231233101231283. The reversal of 231233101231231 is 132132101332132.

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 231233101231231 - 2¹ = 231233101231229 is a prime.

It is a super-2 number, since 2×231233101231231² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 231233101231231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231233101237231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10510595510500 + ... + 10510595510521.

It is an arithmetic number, because the mean of its divisors is an integer number (63063573063066).

Almost surely, 2^{231233101231231} is an apocalyptic number.

231233101231231 is a deficient number, since it is larger than the sum of its proper divisors (21021191021033).

231233101231231 is a wasteful number, since it uses less digits than its factorization.

231233101231231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21021191021032.

The product of its (nonzero) digits is 3888, while the sum is 28.

Adding to 231233101231231 its reverse (132132101332132), we get a palindrome (363365202563363).

The spelling of 231233101231231 in words is "two hundred thirty-one trillion, two hundred thirty-three billion, one hundred one million, two hundred thirty-one thousand, two hundred thirty-one".