211232311040 has 144 divisors (see below), whose sum is σ = 509110869792. Its totient is φ = 83969851392.

The previous prime is 211232311021. The next prime is 211232311051. The reversal of 211232311040 is 40113232112.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 268401527 + ... + 268402313.

Almost surely, 2^211232311040 is an apocalyptic number.

211232311040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 211232311040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (254555434896).

211232311040 is an abundant number, since it is smaller than the sum of its proper divisors (297878558752).

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

211232311040 is an equidigital number, since it uses as much as digits as its factorization.

211232311040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1842 (or 1828 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 211232311040 its reverse (40113232112), we get a palindrome (251345543152).

The spelling of 211232311040 in words is "two hundred eleven billion, two hundred thirty-two million, three hundred eleven thousand, forty".