215107234 has 4 divisors (see below), whose sum is σ = 322660854. Its totient is φ = 107553616.

The previous prime is 215107223. The next prime is 215107237. The reversal of 215107234 is 432701512.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 213890625 + 1216609 = 14625^2 + 1103^2 .

It is a super-2 number, since 2×215107234² = 92542244238261512, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 215107199 and 215107208.

It is not an unprimeable number, because it can be changed into a prime (215107237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53776807 + ... + 53776810.

Almost surely, 2^215107234 is an apocalyptic number.

215107234 is a deficient number, since it is larger than the sum of its proper divisors (107553620).

215107234 is a wasteful number, since it uses less digits than its factorization.

215107234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107553619.

The product of its (nonzero) digits is 1680, while the sum is 25.

The square root of 215107234 is about 14666.5344918287. The cubic root of 215107234 is about 599.1722233163.

Adding to 215107234 its reverse (432701512), we get a palindrome (647808746).

The spelling of 215107234 in words is "two hundred fifteen million, one hundred seven thousand, two hundred thirty-four".