211031203100 has 72 divisors (see below), whose sum is σ = 478216663008. Its totient is φ = 80680089600.

The previous prime is 211031203063. The next prime is 211031203121. The reversal of 211031203100 is 1302130112.

It is a super-2 number, since 2×211031203100² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3003572 + ... + 3073028.

Almost surely, 2^211031203100 is an apocalyptic number.

211031203100 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 211031203100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (239108331504).

211031203100 is an abundant number, since it is smaller than the sum of its proper divisors (267185459908).

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

211031203100 is a wasteful number, since it uses less digits than its factorization.

211031203100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70815 (or 70808 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 14.

Adding to 211031203100 its reverse (1302130112), we get a palindrome (212333333212).

The spelling of 211031203100 in words is "two hundred eleven billion, thirty-one million, two hundred three thousand, one hundred".