202231402123 has 4 divisors (see below), whose sum is σ = 202288549320. Its totient is φ = 202174254928.

The previous prime is 202231402063. The next prime is 202231402151. The reversal of 202231402123 is 321204132202.

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 202231402123 - 2³³ = 193641467531 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 202231402094 and 202231402103.

It is not an unprimeable number, because it can be changed into a prime (202231402823) 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, 28568290 + ... + 28575367.

It is an arithmetic number, because the mean of its divisors is an integer number (50572137330).

Almost surely, 2^202231402123 is an apocalyptic number.

202231402123 is a deficient number, since it is larger than the sum of its proper divisors (57147197).

202231402123 is an equidigital number, since it uses as much as digits as its factorization.

202231402123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57147196.

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 202231402123 its reverse (321204132202), we get a palindrome (523435534325).

The spelling of 202231402123 in words is "two hundred two billion, two hundred thirty-one million, four hundred two thousand, one hundred twenty-three".