211131252040 has 64 divisors (see below), whose sum is σ = 502140384000. Its totient is φ = 79672803840.

The previous prime is 211131251993. The next prime is 211131252047. The reversal of 211131252040 is 40252131112.

It is not an unprimeable number, because it can be changed into a prime (211131252047) 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 15 ways as a sum of consecutive naturals, for example, 399541 + ... + 762820.

It is an arithmetic number, because the mean of its divisors is an integer number (7845943500).

Almost surely, 2^211131252040 is an apocalyptic number.

211131252040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211131252040 is an abundant number, since it is smaller than the sum of its proper divisors (291009131960).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

211131252040 is a wasteful number, since it uses less digits than its factorization.

211131252040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1162630 (or 1162626 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 22.

Adding to 211131252040 its reverse (40252131112), we get a palindrome (251383383152).

The spelling of 211131252040 in words is "two hundred eleven billion, one hundred thirty-one million, two hundred fifty-two thousand, forty".