211240344131 has 8 divisors (see below), whose sum is σ = 222901928400. Its totient is φ = 199633127040.

The previous prime is 211240344109. The next prime is 211240344151. The reversal of 211240344131 is 131443042112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 211240344131 - 2⁶ = 211240344067 is a prime.

It is a super-2 number, since 2×211240344131² (a number of 23 digits) contains 22 as substring.

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 211240344131.

It is not an unprimeable number, because it can be changed into a prime (211240344151) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13583810 + ... + 13599351.

It is an arithmetic number, because the mean of its divisors is an integer number (27862741050).

Almost surely, 2^211240344131 is an apocalyptic number.

211240344131 is a deficient number, since it is larger than the sum of its proper divisors (11661584269).

211240344131 is a wasteful number, since it uses less digits than its factorization.

211240344131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27183589.

The product of its (nonzero) digits is 2304, while the sum is 26.

Adding to 211240344131 its reverse (131443042112), we get a palindrome (342683386243).

The spelling of 211240344131 in words is "two hundred eleven billion, two hundred forty million, three hundred forty-four thousand, one hundred thirty-one".