202023213131123 has 4 divisors (see below), whose sum is σ = 202023261025920. Its totient is φ = 202023165236328.

The previous prime is 202023213131107. The next prime is 202023213131149. The reversal of 202023213131123 is 321131312320202.

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 202023213131123 - 2⁴ = 202023213131107 is a prime.

It is a super-2 number, since 2×202023213131123² (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 = 202023213131092 and 202023213131101.

It is not an unprimeable number, because it can be changed into a prime (202023213131323) 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, 16936040 + ... + 26284517.

It is an arithmetic number, because the mean of its divisors is an integer number (50505815256480).

Almost surely, 2^{202023213131123} is an apocalyptic number.

202023213131123 is a deficient number, since it is larger than the sum of its proper divisors (47894797).

202023213131123 is an equidigital number, since it uses as much as digits as its factorization.

202023213131123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47894796.

The product of its (nonzero) digits is 2592, while the sum is 26.

Adding to 202023213131123 its reverse (321131312320202), we get a palindrome (523154525451325).

The spelling of 202023213131123 in words is "two hundred two trillion, twenty-three billion, two hundred thirteen million, one hundred thirty-one thousand, one hundred twenty-three".