211503132231 has 8 divisors (see below), whose sum is σ = 282019273200. Its totient is φ = 140994539712.

The previous prime is 211503132163. The next prime is 211503132233. The reversal of 211503132231 is 132231305112.

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 211503132231 - 2¹³ = 211503124039 is a prime.

It is a super-2 number, since 2×211503132231² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211503132233) 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, 1821406 + ... + 1934043.

It is an arithmetic number, because the mean of its divisors is an integer number (35252409150).

Almost surely, 2^211503132231 is an apocalyptic number.

211503132231 is a deficient number, since it is larger than the sum of its proper divisors (70516140969).

211503132231 is a wasteful number, since it uses less digits than its factorization.

211503132231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3774225.

The product of its (nonzero) digits is 1080, while the sum is 24.

Adding to 211503132231 its reverse (132231305112), we get a palindrome (343734437343).

The spelling of 211503132231 in words is "two hundred eleven billion, five hundred three million, one hundred thirty-two thousand, two hundred thirty-one".