201020023 has 8 divisors (see below), whose sum is σ = 209978496. Its totient is φ = 192079800.

The previous prime is 201020011. The next prime is 201020041. The reversal of 201020023 is 320020102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 201020023 - 2⁵ = 201019991 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 201019991 and 201020009.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201020123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21088 + ... + 29098.

It is an arithmetic number, because the mean of its divisors is an integer number (26247312).

Almost surely, 2^201020023 is an apocalyptic number.

201020023 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

201020023 is a deficient number, since it is larger than the sum of its proper divisors (8958473).

201020023 is a wasteful number, since it uses less digits than its factorization.

201020023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9125.

The product of its (nonzero) digits is 24, while the sum is 10.

The square root of 201020023 is about 14178.1530179357. The cubic root of 201020023 is about 585.7960507052.

Adding to 201020023 its reverse (320020102), we get a palindrome (521040125).

The spelling of 201020023 in words is "two hundred one million, twenty thousand, twenty-three".