213231020332 has 24 divisors (see below), whose sum is σ = 431023133520. Its totient is φ = 91221826560.

The previous prime is 213231020309. The next prime is 213231020333. The reversal of 213231020332 is 233020132312.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is not an unprimeable number, because it can be changed into a prime (213231020333) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 142533357 + ... + 142534852.

It is an arithmetic number, because the mean of its divisors is an integer number (17959297230).

Almost surely, 2^213231020332 is an apocalyptic number.

213231020332 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

213231020332 is an abundant number, since it is smaller than the sum of its proper divisors (217792113188).

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

213231020332 is a wasteful number, since it uses less digits than its factorization.

213231020332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 285068241 (or 285068239 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 22.

Adding to 213231020332 its reverse (233020132312), we get a palindrome (446251152644).

The spelling of 213231020332 in words is "two hundred thirteen billion, two hundred thirty-one million, twenty thousand, three hundred thirty-two".