215213235413 has 16 divisors (see below), whose sum is σ = 237230441280. Its totient is φ = 193606848000.

The previous prime is 215213235397. The next prime is 215213235431. The reversal of 215213235413 is 314532312512.

It is a cyclic number.

It is not a de Polignac number, because 215213235413 - 2⁴ = 215213235397 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 215213235413.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215213235613) 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, 2047406 + ... + 2149952.

It is an arithmetic number, because the mean of its divisors is an integer number (14826902580).

Almost surely, 2^215213235413 is an apocalyptic number.

It is an amenable number.

215213235413 is a deficient number, since it is larger than the sum of its proper divisors (22017205867).

215213235413 is a wasteful number, since it uses less digits than its factorization.

215213235413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104548.

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

Adding to 215213235413 its reverse (314532312512), we get a palindrome (529745547925).

The spelling of 215213235413 in words is "two hundred fifteen billion, two hundred thirteen million, two hundred thirty-five thousand, four hundred thirteen".