1220523440323 has 8 divisors (see below), whose sum is σ = 1331501552640. Its totient is φ = 1109548900680.

The previous prime is 1220523440273. The next prime is 1220523440327. The reversal of 1220523440323 is 3230443250221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-1220523440323 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1220523440327) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 152115 + ... + 1569772.

It is an arithmetic number, because the mean of its divisors is an integer number (166437694080).

Almost surely, 2^{1220523440323} is an apocalyptic number.

1220523440323 is a deficient number, since it is larger than the sum of its proper divisors (110978112317).

1220523440323 is a wasteful number, since it uses less digits than its factorization.

1220523440323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1786337.

The product of its (nonzero) digits is 34560, while the sum is 31.

Adding to 1220523440323 its reverse (3230443250221), we get a palindrome (4450966690544).

The spelling of 1220523440323 in words is "one trillion, two hundred twenty billion, five hundred twenty-three million, four hundred forty thousand, three hundred twenty-three".