211131431232 has 56 divisors (see below), whose sum is σ = 558873269856. Its totient is φ = 70345056768.

The previous prime is 211131431227. The next prime is 211131431237. The reversal of 211131431232 is 232134131112.

It is an interprime number because it is at equal distance from previous prime (211131431227) and next prime (211131431237).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211131431237) 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, 173398 + ... + 672554.

Almost surely, 2^211131431232 is an apocalyptic number.

It is an amenable number.

211131431232 is an abundant number, since it is smaller than the sum of its proper divisors (347741838624).

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

211131431232 is a wasteful number, since it uses less digits than its factorization.

211131431232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 501375 (or 501365 counting only the distinct ones).

The product of its digits is 864, while the sum is 24.

Adding to 211131431232 its reverse (232134131112), we get a palindrome (443265562344).

The spelling of 211131431232 in words is "two hundred eleven billion, one hundred thirty-one million, four hundred thirty-one thousand, two hundred thirty-two".