215430208340 has 12 divisors (see below), whose sum is σ = 452403437556. Its totient is φ = 86172083328.

The previous prime is 215430208337. The next prime is 215430208387. The reversal of 215430208340 is 43802034512.

215430208340 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 86437176004 + 128993032336 = 294002^2 + 359156^2 .

It is a junction number, because it is equal to n+sod(n) for n = 215430208297 and 215430208306.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5385755189 + ... + 5385755228.

It is an arithmetic number, because the mean of its divisors is an integer number (37700286463).

Almost surely, 2^215430208340 is an apocalyptic number.

215430208340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

215430208340 is an abundant number, since it is smaller than the sum of its proper divisors (236973229216).

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

215430208340 is a wasteful number, since it uses less digits than its factorization.

215430208340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10771510426 (or 10771510424 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 32.

The spelling of 215430208340 in words is "two hundred fifteen billion, four hundred thirty million, two hundred eight thousand, three hundred forty".