215351315330 has 16 divisors (see below), whose sum is σ = 387647568504. Its totient is φ = 86137148160.

The previous prime is 215351315329. The next prime is 215351315381. The reversal of 215351315330 is 33513153512.

It can be written as a sum of positive squares in 4 ways, for example, as 179807377369 + 35543937961 = 424037^2 + 188531^2 .

It is a super-2 number, since 2×215351315330² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 145877 + ... + 672296.

Almost surely, 2^215351315330 is an apocalyptic number.

215351315330 is a deficient number, since it is larger than the sum of its proper divisors (172296253174).

215351315330 is a wasteful number, since it uses less digits than its factorization.

215351315330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 844501.

The product of its (nonzero) digits is 20250, while the sum is 32.

Adding to 215351315330 its reverse (33513153512), we get a palindrome (248864468842).

The spelling of 215351315330 in words is "two hundred fifteen billion, three hundred fifty-one million, three hundred fifteen thousand, three hundred thirty".