1220303343 has 16 divisors (see below), whose sum is σ = 1860122880. Its totient is φ = 697086336.

The previous prime is 1220303339. The next prime is 1220303363. The reversal of 1220303343 is 3433030221.

It is not a de Polignac number, because 1220303343 - 2² = 1220303339 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220303303) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 71671 + ... + 87047.

It is an arithmetic number, because the mean of its divisors is an integer number (116257680).

Almost surely, 2^1220303343 is an apocalyptic number.

1220303343 is a deficient number, since it is larger than the sum of its proper divisors (639819537).

1220303343 is a wasteful number, since it uses less digits than its factorization.

1220303343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19166.

The product of its (nonzero) digits is 1296, while the sum is 21.

The square root of 1220303343 is about 34932.8404656707. The cubic root of 1220303343 is about 1068.6182831963.

Adding to 1220303343 its reverse (3433030221), we get a palindrome (4653333564).

The spelling of 1220303343 in words is "one billion, two hundred twenty million, three hundred three thousand, three hundred forty-three".