213013131320 has 32 divisors (see below), whose sum is σ = 522850414320. Its totient is φ = 77459320320.

The previous prime is 213013131277. The next prime is 213013131343. The reversal of 213013131320 is 23131310312.

It is a super-2 number, since 2×213013131320² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 213013131292 and 213013131301.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 242059937 + ... + 242060816.

Almost surely, 2^213013131320 is an apocalyptic number.

213013131320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

213013131320 is an abundant number, since it is smaller than the sum of its proper divisors (309837283000).

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

213013131320 is a wasteful number, since it uses less digits than its factorization.

213013131320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 484120775 (or 484120771 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 213013131320 its reverse (23131310312), we get a palindrome (236144441632).

The spelling of 213013131320 in words is "two hundred thirteen billion, thirteen million, one hundred thirty-one thousand, three hundred twenty".