213115005 has 24 divisors (see below), whose sum is σ = 379386072. Its totient is φ = 110588544.

The previous prime is 213114991. The next prime is 213115013. The reversal of 213115005 is 500511312.

It can be written as a sum of positive squares in 4 ways, for example, as 85266756 + 127848249 = 9234^2 + 11307^2 .

It is not a de Polignac number, because 213115005 - 2⁴ = 213114989 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 62334 + ... + 65663.

It is an arithmetic number, because the mean of its divisors is an integer number (15807753).

Almost surely, 2^213115005 is an apocalyptic number.

It is an amenable number.

213115005 is a deficient number, since it is larger than the sum of its proper divisors (166271067).

213115005 is a wasteful number, since it uses less digits than its factorization.

213115005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128045 (or 128042 counting only the distinct ones).

The product of its (nonzero) digits is 150, while the sum is 18.

The square root of 213115005 is about 14598.4589940171. The cubic root of 213115005 is about 597.3167262921.

Adding to 213115005 its reverse (500511312), we get a palindrome (713626317).

The spelling of 213115005 in words is "two hundred thirteen million, one hundred fifteen thousand, five".