213231102 has 64 divisors (see below), whose sum is σ = 523252224. Its totient is φ = 56540160.

The previous prime is 213231097. The next prime is 213231121. The reversal of 213231102 is 201132312.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 50077 + ... + 54167.

It is an arithmetic number, because the mean of its divisors is an integer number (8175816).

Almost surely, 2^213231102 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 213231102, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (261626112).

213231102 is an abundant number, since it is smaller than the sum of its proper divisors (310021122).

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

213231102 is a wasteful number, since it uses less digits than its factorization.

213231102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4193.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 213231102 is about 14602.4347969782. The cubic root of 213231102 is about 597.4251717944.

Adding to 213231102 its reverse (201132312), we get a palindrome (414363414).

The spelling of 213231102 in words is "two hundred thirteen million, two hundred thirty-one thousand, one hundred two".