396220231 has 8 divisors (see below), whose sum is σ = 434291328. Its totient is φ = 358491000.

The previous prime is 396220219. The next prime is 396220247. The reversal of 396220231 is 132022693.

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 396220231 - 2¹¹ = 396218183 is a prime.

It is a super-2 number, since 2×396220231² = 313980942907386722, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 396220231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (396220211) 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, 83035 + ... + 87676.

It is an arithmetic number, because the mean of its divisors is an integer number (54286416).

Almost surely, 2^396220231 is an apocalyptic number.

396220231 is a deficient number, since it is larger than the sum of its proper divisors (38071097).

396220231 is a wasteful number, since it uses less digits than its factorization.

396220231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170933.

The product of its (nonzero) digits is 3888, while the sum is 28.

The square root of 396220231 is about 19905.2814850733. The cubic root of 396220231 is about 734.4781530332.

The spelling of 396220231 in words is "three hundred ninety-six million, two hundred twenty thousand, two hundred thirty-one".