202031100233123 has 24 divisors (see below), whose sum is σ = 247404057788448. Its totient is φ = 164174560763136.

The previous prime is 202031100233113. The next prime is 202031100233141. The reversal of 202031100233123 is 321332001130202.

It is not a de Polignac number, because 202031100233123 - 2⁶ = 202031100233059 is a prime.

It is a super-2 number, since 2×202031100233123² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (202031100233113) 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 23 ways as a sum of consecutive naturals, for example, 793078436 + ... + 793333137.

It is an arithmetic number, because the mean of its divisors is an integer number (10308502407852).

Almost surely, 2^{202031100233123} is an apocalyptic number.

202031100233123 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

202031100233123 is a deficient number, since it is larger than the sum of its proper divisors (45372957555325).

202031100233123 is a wasteful number, since it uses less digits than its factorization.

202031100233123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1586411723 (or 1586411716 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 202031100233123 its reverse (321332001130202), we get a palindrome (523363101363325).

The spelling of 202031100233123 in words is "two hundred two trillion, thirty-one billion, one hundred million, two hundred thirty-three thousand, one hundred twenty-three".