201040102309 has 4 divisors (see below), whose sum is σ = 207972519660. Its totient is φ = 194107684960.

The previous prime is 201040102303. The next prime is 201040102313. The reversal of 201040102309 is 903201040102.

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 59628756100 + 141411346209 = 244190^2 + 376047^2 .

It is a cyclic number.

It is not a de Polignac number, because 201040102309 - 2³ = 201040102301 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 201040102309.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201040102301) 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, 3466208632 + ... + 3466208689.

It is an arithmetic number, because the mean of its divisors is an integer number (51993129915).

Almost surely, 2^201040102309 is an apocalyptic number.

201040102309 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

It is an amenable number.

201040102309 is a deficient number, since it is larger than the sum of its proper divisors (6932417351).

201040102309 is an equidigital number, since it uses as much as digits as its factorization.

201040102309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6932417350.

The product of its (nonzero) digits is 432, while the sum is 22.

The spelling of 201040102309 in words is "two hundred one billion, forty million, one hundred two thousand, three hundred nine".