211303204040 has 32 divisors (see below), whose sum is σ = 475573465080. Its totient is φ = 84496169472.

The previous prime is 211303204039. The next prime is 211303204051. The reversal of 211303204040 is 40402303112.

It can be written as a sum of positive squares in 4 ways, for example, as 209941741636 + 1361462404 = 458194^2 + 36898^2 .

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

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, 648149 + ... + 917988.

Almost surely, 2^211303204040 is an apocalyptic number.

211303204040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211303204040 is an abundant number, since it is smaller than the sum of its proper divisors (264270261040).

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

211303204040 is a wasteful number, since it uses less digits than its factorization.

211303204040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1569521 (or 1569517 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 211303204040 its reverse (40402303112), we get a palindrome (251705507152).

The spelling of 211303204040 in words is "two hundred eleven billion, three hundred three million, two hundred four thousand, forty".