411231220 has 12 divisors (see below), whose sum is σ = 863585604. Its totient is φ = 164492480.

The previous prime is 411231217. The next prime is 411231221. The reversal of 411231220 is 22132114.

It can be written as a sum of positive squares in 2 ways, for example, as 47032164 + 364199056 = 6858^2 + 19084^2 .

It is a super-2 number, since 2×411231220² = 338222232605376800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 411231194 and 411231203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (411231221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10280761 + ... + 10280800.

It is an arithmetic number, because the mean of its divisors is an integer number (71965467).

Almost surely, 2^411231220 is an apocalyptic number.

It is an amenable number.

411231220 is an abundant number, since it is smaller than the sum of its proper divisors (452354384).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

411231220 is a wasteful number, since it uses less digits than its factorization.

411231220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20561570 (or 20561568 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 411231220 is about 20278.8367516483. The cubic root of 411231220 is about 743.6387737539.

Adding to 411231220 its reverse (22132114), we get a palindrome (433363334).

The spelling of 411231220 in words is "four hundred eleven million, two hundred thirty-one thousand, two hundred twenty".