201235405013 has 4 divisors (see below), whose sum is σ = 208174556940. Its totient is φ = 194296253088.

The previous prime is 201235404989. The next prime is 201235405027. The reversal of 201235405013 is 310504532102.

It is a happy number.

201235405013 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 46831989649 + 154403415364 = 216407^2 + 392942^2 .

It is a cyclic number.

It is not a de Polignac number, because 201235405013 - 2¹⁶ = 201235339477 is a prime.

It is a super-2 number, since 2×201235405013² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201235405213) 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 3 ways as a sum of consecutive naturals, for example, 3469575920 + ... + 3469575977.

It is an arithmetic number, because the mean of its divisors is an integer number (52043639235).

Almost surely, 2^201235405013 is an apocalyptic number.

It is an amenable number.

201235405013 is a deficient number, since it is larger than the sum of its proper divisors (6939151927).

201235405013 is an equidigital number, since it uses as much as digits as its factorization.

201235405013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6939151926.

The product of its (nonzero) digits is 3600, while the sum is 26.

Adding to 201235405013 its reverse (310504532102), we get a palindrome (511739937115).

The spelling of 201235405013 in words is "two hundred one billion, two hundred thirty-five million, four hundred five thousand, thirteen".