215161234 has 8 divisors (see below), whose sum is σ = 323491968. Its totient is φ = 107330580.

The previous prime is 215161223. The next prime is 215161267. The reversal of 215161234 is 432161512.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 215161199 and 215161208.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 123942 + ... + 125665.

It is an arithmetic number, because the mean of its divisors is an integer number (40436496).

Almost surely, 2^215161234 is an apocalyptic number.

215161234 is a deficient number, since it is larger than the sum of its proper divisors (108330734).

215161234 is a wasteful number, since it uses less digits than its factorization.

215161234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 250040.

The product of its digits is 1440, while the sum is 25.

The square root of 215161234 is about 14668.3753019890. The cubic root of 215161234 is about 599.2223573701. Note that the first 3 decimals are identical.

The spelling of 215161234 in words is "two hundred fifteen million, one hundred sixty-one thousand, two hundred thirty-four".