220131215 has 8 divisors (see below), whose sum is σ = 279696240. Its totient is φ = 165745792.

The previous prime is 220131211. The next prime is 220131227. The reversal of 220131215 is 512131022.

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 not a de Polignac number, because 220131215 - 2² = 220131211 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a junction number, because it is equal to n+sod(n) for n = 220131193 and 220131202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220131211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1294805 + ... + 1294974.

It is an arithmetic number, because the mean of its divisors is an integer number (34962030).

Almost surely, 2^220131215 is an apocalyptic number.

220131215 is a deficient number, since it is larger than the sum of its proper divisors (59565025).

220131215 is a wasteful number, since it uses less digits than its factorization.

220131215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2589801.

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 220131215 is about 14836.8195715928. The cubic root of 220131215 is about 603.8010680269.

Adding to 220131215 its reverse (512131022), we get a palindrome (732262237).

The spelling of 220131215 in words is "two hundred twenty million, one hundred thirty-one thousand, two hundred fifteen".