215543311034 has 4 divisors (see below), whose sum is σ = 323314966554. Its totient is φ = 107771655516.

The previous prime is 215543311019. The next prime is 215543311051. The reversal of 215543311034 is 430113345512.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 116004954025 + 99538357009 = 340595^2 + 315497^2 .

It is a super-2 number, since 2×215543311034² (a number of 23 digits) contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53885827757 + ... + 53885827760.

Almost surely, 2^215543311034 is an apocalyptic number.

215543311034 is a deficient number, since it is larger than the sum of its proper divisors (107771655520).

215543311034 is a wasteful number, since it uses less digits than its factorization.

215543311034 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107771655519.

The product of its (nonzero) digits is 21600, while the sum is 32.

Adding to 215543311034 its reverse (430113345512), we get a palindrome (645656656546).

The spelling of 215543311034 in words is "two hundred fifteen billion, five hundred forty-three million, three hundred eleven thousand, thirty-four".