211310134040 has 32 divisors (see below), whose sum is σ = 475480314000. Its totient is φ = 84518273664.

The previous prime is 211310133971. The next prime is 211310134081. The reversal of 211310134040 is 40431013112.

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 7 ways as a sum of consecutive naturals, for example, 437771 + ... + 783749.

Almost surely, 2^211310134040 is an apocalyptic number.

211310134040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211310134040 is an abundant number, since it is smaller than the sum of its proper divisors (264170179960).

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

211310134040 is a wasteful number, since it uses less digits than its factorization.

211310134040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 361259 (or 361255 counting only the distinct ones).

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

Adding to 211310134040 its reverse (40431013112), we get a palindrome (251741147152).

The spelling of 211310134040 in words is "two hundred eleven billion, three hundred ten million, one hundred thirty-four thousand, forty".