209104234031 has 16 divisors (see below), whose sum is σ = 260778997248. Its totient is φ = 162889855200.

The previous prime is 209104234013. The next prime is 209104234033. The reversal of 209104234031 is 130432401902.

It is a cyclic number.

It is not a de Polignac number, because 209104234031 - 2¹⁰ = 209104233007 is a prime.

It is a super-3 number, since 3×209104234031³ (a number of 35 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 209104233985 and 209104234003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (209104234033) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 142835 + ... + 662276.

It is an arithmetic number, because the mean of its divisors is an integer number (16298687328).

Almost surely, 2^209104234031 is an apocalyptic number.

209104234031 is a deficient number, since it is larger than the sum of its proper divisors (51674763217).

209104234031 is a wasteful number, since it uses less digits than its factorization.

209104234031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 808502.

The product of its (nonzero) digits is 5184, while the sum is 29.

Adding to 209104234031 its reverse (130432401902), we get a palindrome (339536635933).

The spelling of 209104234031 in words is "two hundred nine billion, one hundred four million, two hundred thirty-four thousand, thirty-one".