3121220030 has 16 divisors (see below), whose sum is σ = 5620409424. Its totient is φ = 1247996160.

The previous prime is 3121220029. The next prime is 3121220057. The reversal of 3121220030 is 300221213.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 3121219987 and 3121220014.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34256 + ... + 86115.

It is an arithmetic number, because the mean of its divisors is an integer number (351275589).

Almost surely, 2^3121220030 is an apocalyptic number.

3121220030 is a deficient number, since it is larger than the sum of its proper divisors (2499189394).

3121220030 is a wasteful number, since it uses less digits than its factorization.

3121220030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122971.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 3121220030 is about 55867.8801280306. The cubic root of 3121220030 is about 1461.4191539736.

Adding to 3121220030 its reverse (300221213), we get a palindrome (3421441243).

The spelling of 3121220030 in words is "three billion, one hundred twenty-one million, two hundred twenty thousand, thirty".