213231333340 has 24 divisors (see below), whose sum is σ = 447814649520. Its totient is φ = 85287038208.

The previous prime is 213231333323. The next prime is 213231333373. The reversal of 213231333340 is 43333132312.

It is a junction number, because it is equal to n+sod(n) for n = 213231333299 and 213231333308.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 17722 + ... + 653281.

It is an arithmetic number, because the mean of its divisors is an integer number (18658943730).

Almost surely, 2^213231333340 is an apocalyptic number.

213231333340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

213231333340 is an abundant number, since it is smaller than the sum of its proper divisors (234583316180).

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

213231333340 is a wasteful number, since it uses less digits than its factorization.

213231333340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 686901 (or 686899 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 28.

Adding to 213231333340 its reverse (43333132312), we get a palindrome (256564465652).

The spelling of 213231333340 in words is "two hundred thirteen billion, two hundred thirty-one million, three hundred thirty-three thousand, three hundred forty".