203123131024312 has 8 divisors (see below), whose sum is σ = 380855870670600. Its totient is φ = 101561565512152.

The previous prime is 203123131024171. The next prime is 203123131024313. The reversal of 203123131024312 is 213420131321302.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203123131024313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12695195689012 + ... + 12695195689027.

It is an arithmetic number, because the mean of its divisors is an integer number (47606983833825).

Almost surely, 2^{203123131024312} is an apocalyptic number.

It is an amenable number.

203123131024312 is a deficient number, since it is larger than the sum of its proper divisors (177732739646288).

203123131024312 is a wasteful number, since it uses less digits than its factorization.

203123131024312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25390391378045 (or 25390391378041 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 28.

Adding to 203123131024312 its reverse (213420131321302), we get a palindrome (416543262345614).

The spelling of 203123131024312 in words is "two hundred three trillion, one hundred twenty-three billion, one hundred thirty-one million, twenty-four thousand, three hundred twelve".