220831197 has 8 divisors (see below), whose sum is σ = 303939840. Its totient is φ = 142471680.

The previous prime is 220831183. The next prime is 220831199. The reversal of 220831197 is 791138022.

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

It is not a de Polignac number, because 220831197 - 2⁸ = 220830941 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220831199) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1187172 + ... + 1187357.

It is an arithmetic number, because the mean of its divisors is an integer number (37992480).

Almost surely, 2^220831197 is an apocalyptic number.

It is an amenable number.

220831197 is a deficient number, since it is larger than the sum of its proper divisors (83108643).

220831197 is a wasteful number, since it uses less digits than its factorization.

220831197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2374563.

The product of its (nonzero) digits is 6048, while the sum is 33.

The square root of 220831197 is about 14860.3902034906. The cubic root of 220831197 is about 604.4403877506.

The spelling of 220831197 in words is "two hundred twenty million, eight hundred thirty-one thousand, one hundred ninety-seven".