213340524240 has 40 divisors (see below), whose sum is σ = 661355625888. Its totient is φ = 56890806400.

The previous prime is 213340524239. The next prime is 213340524253. The reversal of 213340524240 is 42425043312.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 213340524198 and 213340524207.

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, 444459186 + ... + 444459665.

Almost surely, 2^213340524240 is an apocalyptic number.

213340524240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

213340524240 is an abundant number, since it is smaller than the sum of its proper divisors (448015101648).

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

213340524240 is a wasteful number, since it uses less digits than its factorization.

213340524240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 888918867 (or 888918861 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 30.

Adding to 213340524240 its reverse (42425043312), we get a palindrome (255765567552).

The spelling of 213340524240 in words is "two hundred thirteen billion, three hundred forty million, five hundred twenty-four thousand, two hundred forty".