211550545131 has 8 divisors (see below), whose sum is σ = 284126280144. Its totient is φ = 140004253440.

The previous prime is 211550545111. The next prime is 211550545169. The reversal of 211550545131 is 131545055112.

It is a happy number.

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

It is not a de Polignac number, because 211550545131 - 2⁵ = 211550545099 is a prime.

It is a super-2 number, since 2×211550545131² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 211550545092 and 211550545101.

It is not an unprimeable number, because it can be changed into a prime (211550545111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 257360350 + ... + 257361171.

It is an arithmetic number, because the mean of its divisors is an integer number (35515785018).

Almost surely, 2^211550545131 is an apocalyptic number.

211550545131 is a deficient number, since it is larger than the sum of its proper divisors (72575735013).

211550545131 is a wasteful number, since it uses less digits than its factorization.

211550545131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 514721661.

The product of its (nonzero) digits is 15000, while the sum is 33.

The spelling of 211550545131 in words is "two hundred eleven billion, five hundred fifty million, five hundred forty-five thousand, one hundred thirty-one".