213185330694340 has 48 divisors (see below), whose sum is σ = 471253398779520. Its totient is φ = 80785743171840.

The previous prime is 213185330694319. The next prime is 213185330694341. The reversal of 213185330694340 is 43496033581312.

It is a happy number.

It is a super-3 number, since 3×213185330694340³ (a number of 44 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (213185330694341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 135516729 + ... + 137080831.

It is an arithmetic number, because the mean of its divisors is an integer number (9817779141240).

Almost surely, 2^{213185330694340} is an apocalyptic number.

213185330694340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

213185330694340 is an abundant number, since it is smaller than the sum of its proper divisors (258068068085180).

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

213185330694340 is a wasteful number, since it uses less digits than its factorization.

213185330694340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1922812 (or 1922810 counting only the distinct ones).

The product of its (nonzero) digits is 5598720, while the sum is 52.

The spelling of 213185330694340 in words is "two hundred thirteen trillion, one hundred eighty-five billion, three hundred thirty million, six hundred ninety-four thousand, three hundred forty".