213411340420 has 24 divisors (see below), whose sum is σ = 474526392984. Its totient is φ = 80343092736.

The previous prime is 213411340327. The next prime is 213411340423. The reversal of 213411340420 is 24043114312.

It can be written as a sum of positive squares in 4 ways, for example, as 9569926276 + 203841414144 = 97826^2 + 451488^2 .

It is a super-2 number, since 2×213411340420² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (213411340423) 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, 313839867 + ... + 313840546.

It is an arithmetic number, because the mean of its divisors is an integer number (19771933041).

Almost surely, 2^213411340420 is an apocalyptic number.

213411340420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

213411340420 is an abundant number, since it is smaller than the sum of its proper divisors (261115052564).

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

213411340420 is a wasteful number, since it uses less digits than its factorization.

213411340420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 627680439 (or 627680437 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 213411340420 its reverse (24043114312), we get a palindrome (237454454732).

The spelling of 213411340420 in words is "two hundred thirteen billion, four hundred eleven million, three hundred forty thousand, four hundred twenty".