1220523323343 has 4 divisors (see below), whose sum is σ = 1627364431128. Its totient is φ = 813682215560.

The previous prime is 1220523323333. The next prime is 1220523323417. The reversal of 1220523323343 is 3433233250221.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1220523323343 - 2⁵ = 1220523323311 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220523323333) 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, 203420553888 + ... + 203420553893.

It is an arithmetic number, because the mean of its divisors is an integer number (406841107782).

Almost surely, 2^{1220523323343} is an apocalyptic number.

1220523323343 is a deficient number, since it is larger than the sum of its proper divisors (406841107785).

1220523323343 is an equidigital number, since it uses as much as digits as its factorization.

1220523323343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 406841107784.

The product of its (nonzero) digits is 77760, while the sum is 33.

Adding to 1220523323343 its reverse (3433233250221), we get a palindrome (4653756573564).

The spelling of 1220523323343 in words is "one trillion, two hundred twenty billion, five hundred twenty-three million, three hundred twenty-three thousand, three hundred forty-three".