213231004120 has 32 divisors (see below), whose sum is σ = 482642647200. Its totient is φ = 84781666048.

The previous prime is 213231004117. The next prime is 213231004121. The reversal of 213231004120 is 21400132312.

It is a happy number.

It is a super-2 number, since 2×213231004120² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213231004121) 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, 15953725 + ... + 15967084.

It is an arithmetic number, because the mean of its divisors is an integer number (15082582725).

Almost surely, 2^213231004120 is an apocalyptic number.

213231004120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

213231004120 is an abundant number, since it is smaller than the sum of its proper divisors (269411643080).

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

213231004120 is a wasteful number, since it uses less digits than its factorization.

213231004120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31920987 (or 31920983 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 213231004120 its reverse (21400132312), we get a palindrome (234631136432).

The spelling of 213231004120 in words is "two hundred thirteen billion, two hundred thirty-one million, four thousand, one hundred twenty".