201013823 has 2 divisors, whose sum is σ = 201013824. Its totient is φ = 201013822.

The previous prime is 201013817. The next prime is 201013837. The reversal of 201013823 is 328310102.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 201013823 - 2⁶ = 201013759 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 201013795 and 201013804.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (201013843) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100506911 + 100506912.

It is an arithmetic number, because the mean of its divisors is an integer number (100506912).

Almost surely, 2^201013823 is an apocalyptic number.

201013823 is a deficient number, since it is larger than the sum of its proper divisors (1).

201013823 is an equidigital number, since it uses as much as digits as its factorization.

201013823 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 201013823 is about 14177.9343699990. The cubic root of 201013823 is about 585.7900281330.

Adding to 201013823 its reverse (328310102), we get a palindrome (529323925).

The spelling of 201013823 in words is "two hundred one million, thirteen thousand, eight hundred twenty-three".