213158085 has 24 divisors (see below), whose sum is σ = 396736416. Its totient is φ = 97443360.

The previous prime is 213158069. The next prime is 213158107. The reversal of 213158085 is 580851312.

It is a happy number.

It is not a de Polignac number, because 213158085 - 2⁴ = 213158069 is a prime.

It is a Curzon number.

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, 144271 + ... + 145740.

It is an arithmetic number, because the mean of its divisors is an integer number (16530684).

Almost surely, 2^213158085 is an apocalyptic number.

It is an amenable number.

213158085 is a deficient number, since it is larger than the sum of its proper divisors (183578331).

213158085 is a wasteful number, since it uses less digits than its factorization.

213158085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 290033 (or 290026 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 33.

The square root of 213158085 is about 14599.9344176609. The cubic root of 213158085 is about 597.3569716530.

The spelling of 213158085 in words is "two hundred thirteen million, one hundred fifty-eight thousand, eighty-five".