213003134440 has 16 divisors (see below), whose sum is σ = 479257052580. Its totient is φ = 85201253760.

The previous prime is 213003134423. The next prime is 213003134447. The reversal of 213003134440 is 44431300312.

It can be written as a sum of positive squares in 2 ways, for example, as 212851204164 + 151930276 = 461358^2 + 12326^2 .

It is a super-2 number, since 2×213003134440² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (213003134447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2662539141 + ... + 2662539220.

Almost surely, 2^213003134440 is an apocalyptic number.

213003134440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

213003134440 is an abundant number, since it is smaller than the sum of its proper divisors (266253918140).

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

213003134440 is a wasteful number, since it uses less digits than its factorization.

213003134440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5325078372 (or 5325078368 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 213003134440 its reverse (44431300312), we get a palindrome (257434434752).

The spelling of 213003134440 in words is "two hundred thirteen billion, three million, one hundred thirty-four thousand, four hundred forty".