130805215 has 8 divisors (see below), whose sum is σ = 165227760. Its totient is φ = 99136512.

The previous prime is 130805197. The next prime is 130805221. The reversal of 130805215 is 512508031.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-130805215 is a prime.

It is a super-3 number, since 3×130805215³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a self number, because there is not a number n which added to its sum of digits gives 130805215.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 688354 + ... + 688543.

It is an arithmetic number, because the mean of its divisors is an integer number (20653470).

Almost surely, 2^130805215 is an apocalyptic number.

130805215 is a deficient number, since it is larger than the sum of its proper divisors (34422545).

130805215 is a wasteful number, since it uses less digits than its factorization.

130805215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1376921.

The product of its (nonzero) digits is 1200, while the sum is 25.

The square root of 130805215 is about 11437.0107545634. The cubic root of 130805215 is about 507.6234615946.

The spelling of 130805215 in words is "one hundred thirty million, eight hundred five thousand, two hundred fifteen".