214223312440 has 128 divisors (see below), whose sum is σ = 524474092800. Its totient is φ = 78430289920.

The previous prime is 214223312419. The next prime is 214223312483. The reversal of 214223312440 is 44213322412.

It is a junction number, because it is equal to n+sod(n) for n = 214223312399 and 214223312408.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8825841 + ... + 8850079.

It is an arithmetic number, because the mean of its divisors is an integer number (4097453850).

Almost surely, 2^214223312440 is an apocalyptic number.

214223312440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 214223312440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (262237046400).

214223312440 is an abundant number, since it is smaller than the sum of its proper divisors (310250780360).

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

214223312440 is a wasteful number, since it uses less digits than its factorization.

214223312440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24625 (or 24621 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 28.

Adding to 214223312440 its reverse (44213322412), we get a palindrome (258436634852).

The spelling of 214223312440 in words is "two hundred fourteen billion, two hundred twenty-three million, three hundred twelve thousand, four hundred forty".