211403324040 has 64 divisors (see below), whose sum is σ = 637429383360. Its totient is φ = 56088049920.

The previous prime is 211403324023. The next prime is 211403324051. The reversal of 211403324040 is 40423304112.

It is a super-2 number, since 2×211403324040² (a number of 23 digits) contains 22 as substring.

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

It is a self number, because there is not a number n which added to its sum of digits gives 211403324040.

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, 4447666 + ... + 4494945.

It is an arithmetic number, because the mean of its divisors is an integer number (9959834115).

Almost surely, 2^211403324040 is an apocalyptic number.

211403324040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211403324040 is an abundant number, since it is smaller than the sum of its proper divisors (426026059320).

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

211403324040 is a wasteful number, since it uses less digits than its factorization.

211403324040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8942822 (or 8942818 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 211403324040 its reverse (40423304112), we get a palindrome (251826628152).

The spelling of 211403324040 in words is "two hundred eleven billion, four hundred three million, three hundred twenty-four thousand, forty".