1220331013 has 16 divisors (see below), whose sum is σ = 1370990016. Its totient is φ = 1076624640.

The previous prime is 1220331001. The next prime is 1220331017. The reversal of 1220331013 is 3101330221.

It is a cyclic number.

It is not a de Polignac number, because 1220331013 - 2⁵ = 1220330981 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220331017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 66045 + ... + 82477.

It is an arithmetic number, because the mean of its divisors is an integer number (85686876).

Almost surely, 2^1220331013 is an apocalyptic number.

It is an amenable number.

1220331013 is a deficient number, since it is larger than the sum of its proper divisors (150659003).

1220331013 is a wasteful number, since it uses less digits than its factorization.

1220331013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16644.

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 1220331013 is about 34933.2365090897. The cubic root of 1220331013 is about 1068.6263599980.

Adding to 1220331013 its reverse (3101330221), we get a palindrome (4321661234).

It can be divided in two parts, 1220 and 331013, that added together give a palindrome (332233).

The spelling of 1220331013 in words is "one billion, two hundred twenty million, three hundred thirty-one thousand, thirteen".