215118013 has 8 divisors (see below), whose sum is σ = 239667840. Its totient is φ = 191400480.

The previous prime is 215117951. The next prime is 215118031. The reversal of 215118013 is 310811512.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 215118013 - 2²¹ = 213020861 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215118613) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 207528 + ... + 208561.

It is an arithmetic number, because the mean of its divisors is an integer number (29958480).

Almost surely, 2^215118013 is an apocalyptic number.

It is an amenable number.

215118013 is a deficient number, since it is larger than the sum of its proper divisors (24549827).

215118013 is a wasteful number, since it uses less digits than its factorization.

215118013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 416147.

The product of its (nonzero) digits is 240, while the sum is 22.

The square root of 215118013 is about 14666.9019564460. The cubic root of 215118013 is about 599.1822313007.

Adding to 215118013 its reverse (310811512), we get a palindrome (525929525).

It can be divided in two parts, 2151 and 18013, that added together give a square (20164 = 142²).

The spelling of 215118013 in words is "two hundred fifteen million, one hundred eighteen thousand, thirteen".