213020432340 has 48 divisors (see below), whose sum is σ = 600407283840. Its totient is φ = 56429251200.

The previous prime is 213020432333. The next prime is 213020432347. The reversal of 213020432340 is 43234020312.

It is an interprime number because it is at equal distance from previous prime (213020432333) and next prime (213020432347).

It is a self number, because there is not a number n which added to its sum of digits gives 213020432340.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213020432347) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11747035 + ... + 11765154.

It is an arithmetic number, because the mean of its divisors is an integer number (12508485080).

Almost surely, 2^213020432340 is an apocalyptic number.

213020432340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

213020432340 is an abundant number, since it is smaller than the sum of its proper divisors (387386851500).

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

213020432340 is a wasteful number, since it uses less digits than its factorization.

213020432340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23512352 (or 23512350 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 24.

Adding to 213020432340 its reverse (43234020312), we get a palindrome (256254452652).

The spelling of 213020432340 in words is "two hundred thirteen billion, twenty million, four hundred thirty-two thousand, three hundred forty".