202115023 has 16 divisors (see below), whose sum is σ = 237875616. Its totient is φ = 169661440.

The previous prime is 202115003. The next prime is 202115041. The reversal of 202115023 is 320511202.

It is a cyclic number.

It is not a de Polignac number, because 202115023 - 2⁹ = 202114511 is a prime.

It is a zygodrome in base 2.

It is a junction number, because it is equal to n+sod(n) for n = 202114988 and 202115006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202115003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 286 + ... + 20107.

It is an arithmetic number, because the mean of its divisors is an integer number (14867226).

Almost surely, 2^202115023 is an apocalyptic number.

202115023 is a deficient number, since it is larger than the sum of its proper divisors (35760593).

202115023 is a wasteful number, since it uses less digits than its factorization.

202115023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20474.

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 202115023 is about 14216.7163226956. The cubic root of 202115023 is about 586.8577782516.

Adding to 202115023 its reverse (320511202), we get a palindrome (522626225).

The spelling of 202115023 in words is "two hundred two million, one hundred fifteen thousand, twenty-three".