213311003440420 has 24 divisors (see below), whose sum is σ = 447954548651064. Its totient is φ = 85324126818816.

The previous prime is 213311003440399. The next prime is 213311003440547. The reversal of 213311003440420 is 24044300113312.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 16599382686756 + 196711620753664 = 4074234^2 + 14025392^2 .

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, 10730277 + ... + 23275756.

It is an arithmetic number, because the mean of its divisors is an integer number (18664772860461).

Almost surely, 2^{213311003440420} is an apocalyptic number.

213311003440420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

213311003440420 is an abundant number, since it is smaller than the sum of its proper divisors (234643545210644).

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

213311003440420 is a wasteful number, since it uses less digits than its factorization.

213311003440420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34319679 (or 34319677 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 28.

Adding to 213311003440420 its reverse (24044300113312), we get a palindrome (237355303553732).

The spelling of 213311003440420 in words is "two hundred thirteen trillion, three hundred eleven billion, three million, four hundred forty thousand, four hundred twenty".