203131122102123 has 64 divisors (see below), whose sum is σ = 293961979035648. Its totient is φ = 124299398361600.

The previous prime is 203131122102059. The next prime is 203131122102253. The reversal of 203131122102123 is 321201221131302.

It is not a de Polignac number, because 203131122102123 - 2⁶ = 203131122102059 is a prime.

It is a super-2 number, since 2×203131122102123² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 203131122102093 and 203131122102102.

It is not an unprimeable number, because it can be changed into a prime (203131122182123) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 572747698 + ... + 573102248.

It is an arithmetic number, because the mean of its divisors is an integer number (4593155922432).

Almost surely, 2^{203131122102123} is an apocalyptic number.

203131122102123 is a deficient number, since it is larger than the sum of its proper divisors (90830856933525).

203131122102123 is a wasteful number, since it uses less digits than its factorization.

203131122102123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 356312.

The product of its (nonzero) digits is 864, while the sum is 24.

Adding to 203131122102123 its reverse (321201221131302), we get a palindrome (524332343233425).

The spelling of 203131122102123 in words is "two hundred three trillion, one hundred thirty-one billion, one hundred twenty-two million, one hundred two thousand, one hundred twenty-three".