213020230140 has 432 divisors, whose sum is σ = 699876017568. Its totient is φ = 52421935104.

The previous prime is 213020230117. The next prime is 213020230153. The reversal of 213020230140 is 41032020312.

213020230140 is a `hidden beast` number, since 21 + 302 + 0 + 2 + 301 + 40 = 666.

213020230140 is digitally balanced in base 7, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 491963364 + ... + 491963796.

It is an arithmetic number, because the mean of its divisors is an integer number (1620083374).

Almost surely, 2^213020230140 is an apocalyptic number.

213020230140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 213020230140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (349938008784).

213020230140 is an abundant number, since it is smaller than the sum of its proper divisors (486855787428).

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

213020230140 is a wasteful number, since it uses less digits than its factorization.

213020230140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 666 (or 642 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 213020230140 its reverse (41032020312), we get a palindrome (254052250452).

The spelling of 213020230140 in words is "two hundred thirteen billion, twenty million, two hundred thirty thousand, one hundred forty".