212343031100 has 36 divisors (see below), whose sum is σ = 480818486064. Its totient is φ = 81244289280.

The previous prime is 212343031093. The next prime is 212343031141. The reversal of 212343031100 is 1130343212.

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 11 ways as a sum of consecutive naturals, for example, 46159229 + ... + 46163828.

Almost surely, 2^212343031100 is an apocalyptic number.

212343031100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212343031100 is an abundant number, since it is smaller than the sum of its proper divisors (268475454964).

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

212343031100 is a wasteful number, since it uses less digits than its factorization.

212343031100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92323094 (or 92323087 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 212343031100 its reverse (1130343212), we get a palindrome (213473374312).

The spelling of 212343031100 in words is "two hundred twelve billion, three hundred forty-three million, thirty-one thousand, one hundred".