1220343132 has 24 divisors (see below), whose sum is σ = 2874082176. Its totient is φ = 402978928.

The previous prime is 1220343097. The next prime is 1220343143. The reversal of 1220343132 is 2313430221.

It is a junction number, because it is equal to n+sod(n) for n = 1220343099 and 1220343108.

It is a congruent number.

It is an unprimeable number.

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, 473928 + ... + 476495.

It is an arithmetic number, because the mean of its divisors is an integer number (119753424).

Almost surely, 2^1220343132 is an apocalyptic number.

1220343132 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1220343132 is an abundant number, since it is smaller than the sum of its proper divisors (1653739044).

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

1220343132 is a wasteful number, since it uses less digits than its factorization.

1220343132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 950537 (or 950535 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 1220343132 is about 34933.4099681093. The cubic root of 1220343132 is about 1068.6298974644.

Adding to 1220343132 its reverse (2313430221), we get a palindrome (3533773353).

The spelling of 1220343132 in words is "one billion, two hundred twenty million, three hundred forty-three thousand, one hundred thirty-two".