213231302020 has 144 divisors (see below), whose sum is σ = 498002722560. Its totient is φ = 76056422400.

The previous prime is 213231302017. The next prime is 213231302023. The reversal of 213231302020 is 20203132312.

It is an interprime number because it is at equal distance from previous prime (213231302017) and next prime (213231302023).

It is a super-2 number, since 2×213231302020² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (213231302023) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 280198440 + ... + 280199200.

It is an arithmetic number, because the mean of its divisors is an integer number (3458352240).

Almost surely, 2^213231302020 is an apocalyptic number.

213231302020 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 213231302020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (249001361280).

213231302020 is an abundant number, since it is smaller than the sum of its proper divisors (284771420540).

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

213231302020 is a wasteful number, since it uses less digits than its factorization.

213231302020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1166 (or 1091 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 213231302020 its reverse (20203132312), we get a palindrome (233434434332).

The spelling of 213231302020 in words is "two hundred thirteen billion, two hundred thirty-one million, three hundred two thousand, twenty".