203123142212231 has 4 divisors (see below), whose sum is σ = 209675501638464. Its totient is φ = 196570782786000.

The previous prime is 203123142212197. The next prime is 203123142212279. The reversal of 203123142212231 is 132212241321302.

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 203123142212231 - 2⁶ = 203123142212167 is a prime.

It is a super-2 number, since 2×203123142212231² (a number of 29 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 = 203123142212194 and 203123142212203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203123142212531) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3276179713070 + ... + 3276179713131.

It is an arithmetic number, because the mean of its divisors is an integer number (52418875409616).

Almost surely, 2^{203123142212231} is an apocalyptic number.

203123142212231 is a deficient number, since it is larger than the sum of its proper divisors (6552359426233).

203123142212231 is an equidigital number, since it uses as much as digits as its factorization.

203123142212231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6552359426232.

The product of its (nonzero) digits is 6912, while the sum is 29.

Adding to 203123142212231 its reverse (132212241321302), we get a palindrome (335335383533533).

The spelling of 203123142212231 in words is "two hundred three trillion, one hundred twenty-three billion, one hundred forty-two million, two hundred twelve thousand, two hundred thirty-one".