1220300523 has 48 divisors (see below), whose sum is σ = 1966298880. Its totient is φ = 724204800.

The previous prime is 1220300519. The next prime is 1220300533. The reversal of 1220300523 is 3250030221.

It is not a de Polignac number, because 1220300523 - 2² = 1220300519 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1220300496 and 1220300505.

It is not an unprimeable number, because it can be changed into a prime (1220300513) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 1845813 + ... + 1846473.

It is an arithmetic number, because the mean of its divisors is an integer number (40964560).

Almost surely, 2^1220300523 is an apocalyptic number.

1220300523 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1220300523 is a deficient number, since it is larger than the sum of its proper divisors (745998357).

1220300523 is a wasteful number, since it uses less digits than its factorization.

1220300523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1220 (or 1217 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 18.

The square root of 1220300523 is about 34932.8001024825. The cubic root of 1220300523 is about 1068.6174600387.

Adding to 1220300523 its reverse (3250030221), we get a palindrome (4470330744).

The spelling of 1220300523 in words is "one billion, two hundred twenty million, three hundred thousand, five hundred twenty-three".