211031011332 has 18 divisors (see below), whose sum is σ = 533439500958. Its totient is φ = 70343670432.

The previous prime is 211031011319. The next prime is 211031011337. The reversal of 211031011332 is 233110130112.

211031011332 is a `hidden beast` number, since 2 + 1 + 10 + 310 + 11 + 332 = 666.

It can be written as a sum of positive squares in only one way, i.e., 209053786176 + 1977225156 = 457224^2 + 44466^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (211031011337) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2930986233 + ... + 2930986304.

It is an arithmetic number, because the mean of its divisors is an integer number (29635527831).

Almost surely, 2^211031011332 is an apocalyptic number.

It is an amenable number.

211031011332 is an abundant number, since it is smaller than the sum of its proper divisors (322408489626).

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

211031011332 is a wasteful number, since it uses less digits than its factorization.

211031011332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5861972547 (or 5861972542 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 211031011332 its reverse (233110130112), we get a palindrome (444141141444).

The spelling of 211031011332 in words is "two hundred eleven billion, thirty-one million, eleven thousand, three hundred thirty-two".