213231100100 has 36 divisors (see below), whose sum is σ = 463513538964. Its totient is φ = 85144596480.

The previous prime is 213231100091. The next prime is 213231100133. The reversal of 213231100100 is 1001132312.

It can be written as a sum of positive squares in 6 ways, for example, as 5034186304 + 208196913796 = 70952^2 + 456286^2 .

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, 1790057 + ... + 1905456.

Almost surely, 2^213231100100 is an apocalyptic number.

213231100100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

213231100100 is an abundant number, since it is smaller than the sum of its proper divisors (250282438864).

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

213231100100 is a wasteful number, since it uses less digits than its factorization.

213231100100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3696104 (or 3696097 counting only the distinct ones).

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

Adding to 213231100100 its reverse (1001132312), we get a palindrome (214232232412).

The spelling of 213231100100 in words is "two hundred thirteen billion, two hundred thirty-one million, one hundred thousand, one hundred".