215312435338 has 32 divisors (see below), whose sum is σ = 433636237440. Its totient is φ = 77435040960.

The previous prime is 215312435329. The next prime is 215312435339. The reversal of 215312435338 is 833534213512.

It is a happy number.

It is a super-2 number, since 2×215312435338² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 215312435338.

It is not an unprimeable number, because it can be changed into a prime (215312435339) 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, 53772333 + ... + 53776336.

It is an arithmetic number, because the mean of its divisors is an integer number (13551132420).

Almost surely, 2^215312435338 is an apocalyptic number.

215312435338 is an abundant number, since it is smaller than the sum of its proper divisors (218323802102).

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

215312435338 is a wasteful number, since it uses less digits than its factorization.

215312435338 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107548702.

The product of its digits is 259200, while the sum is 40.

The spelling of 215312435338 in words is "two hundred fifteen billion, three hundred twelve million, four hundred thirty-five thousand, three hundred thirty-eight".