219331040 has 24 divisors (see below), whose sum is σ = 518169960. Its totient is φ = 87732352.

The previous prime is 219331039. The next prime is 219331043. The reversal of 219331040 is 40133912.

It is a super-2 number, since 2×219331040² = 96212210214963200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 219330997 and 219331015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (219331043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 685250 + ... + 685569.

It is an arithmetic number, because the mean of its divisors is an integer number (21590415).

Almost surely, 2^219331040 is an apocalyptic number.

219331040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

219331040 is an abundant number, since it is smaller than the sum of its proper divisors (298838920).

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

219331040 is a wasteful number, since it uses less digits than its factorization.

219331040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1370834 (or 1370826 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 219331040 is about 14809.8291684948. The cubic root of 219331040 is about 603.0685759452.

Adding to 219331040 its reverse (40133912), we get a palindrome (259464952).

It can be divided in two parts, 2193 and 31040, that added together give a palindrome (33233).

The spelling of 219331040 in words is "two hundred nineteen million, three hundred thirty-one thousand, forty".