523303205202101 has 4 divisors (see below), whose sum is σ = 523306737435852. Its totient is φ = 523299672968352.

The previous prime is 523303205202073. The next prime is 523303205202163. The reversal of 523303205202101 is 101202502303325.

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 197507889062500 + 325795316139601 = 14053750^2 + 18049801^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-523303205202101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (523303205202301) 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, 1765894640 + ... + 1766190953.

It is an arithmetic number, because the mean of its divisors is an integer number (130826684358963).

Almost surely, 2^{523303205202101} is an apocalyptic number.

It is an amenable number.

523303205202101 is a deficient number, since it is larger than the sum of its proper divisors (3532233751).

523303205202101 is a wasteful number, since it uses less digits than its factorization.

523303205202101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3532233750.

The product of its (nonzero) digits is 10800, while the sum is 29.

Adding to 523303205202101 its reverse (101202502303325), we get a palindrome (624505707505426).

The spelling of 523303205202101 in words is "five hundred twenty-three trillion, three hundred three billion, two hundred five million, two hundred two thousand, one hundred one".