202316230121 has 4 divisors (see below), whose sum is σ = 214217184852. Its totient is φ = 190415275392.

The previous prime is 202316230099. The next prime is 202316230139. The reversal of 202316230121 is 121032613202.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 59311244521 + 143004985600 = 243539^2 + 378160^2 .

It is a cyclic number.

It is not a de Polignac number, because 202316230121 - 2³⁰ = 201242488297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (202316232121) 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, 5950477340 + ... + 5950477373.

It is an arithmetic number, because the mean of its divisors is an integer number (53554296213).

Almost surely, 2^202316230121 is an apocalyptic number.

It is an amenable number.

202316230121 is a deficient number, since it is larger than the sum of its proper divisors (11900954731).

202316230121 is a wasteful number, since it uses less digits than its factorization.

202316230121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11900954730.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 202316230121 its reverse (121032613202), we get a palindrome (323348843323).

The spelling of 202316230121 in words is "two hundred two billion, three hundred sixteen million, two hundred thirty thousand, one hundred twenty-one".