201026623 has 4 divisors (see below), whose sum is σ = 229744720. Its totient is φ = 172308528.

The previous prime is 201026611. The next prime is 201026627. The reversal of 201026623 is 326620102.

It is a happy number.

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

It is not a de Polignac number, because 201026623 - 2¹³ = 201018431 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 201026594 and 201026603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201026627) 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, 14359038 + ... + 14359051.

It is an arithmetic number, because the mean of its divisors is an integer number (57436180).

Almost surely, 2^201026623 is an apocalyptic number.

201026623 is a deficient number, since it is larger than the sum of its proper divisors (28718097).

201026623 is an equidigital number, since it uses as much as digits as its factorization.

201026623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28718096.

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 201026623 is about 14178.3857684858. The cubic root of 201026623 is about 585.8024616945.

Adding to 201026623 its reverse (326620102), we get a palindrome (527646725).

The spelling of 201026623 in words is "two hundred one million, twenty-six thousand, six hundred twenty-three".