202102310023133 has 4 divisors (see below), whose sum is σ = 217648641563388. Its totient is φ = 186555978482880.

The previous prime is 202102310023123. The next prime is 202102310023171. The reversal of 202102310023133 is 331320013201202.

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 62935059318244 + 139167250704889 = 7933162^2 + 11796917^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-202102310023133 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 202102310023099 and 202102310023108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202102310023123) 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, 7773165770108 + ... + 7773165770133.

It is an arithmetic number, because the mean of its divisors is an integer number (54412160390847).

Almost surely, 2^{202102310023133} is an apocalyptic number.

It is an amenable number.

202102310023133 is a deficient number, since it is larger than the sum of its proper divisors (15546331540255).

202102310023133 is a wasteful number, since it uses less digits than its factorization.

202102310023133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15546331540254.

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

Adding to 202102310023133 its reverse (331320013201202), we get a palindrome (533422323224335).

The spelling of 202102310023133 in words is "two hundred two trillion, one hundred two billion, three hundred ten million, twenty-three thousand, one hundred thirty-three".