3121022320 has 40 divisors (see below), whose sum is σ = 7814562336. Its totient is φ = 1152377088.

The previous prime is 3121022293. The next prime is 3121022323. The reversal of 3121022320 is 232201213.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a junction number, because it is equal to n+sod(n) for n = 3121022294 and 3121022303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3121022323) 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 7 ways as a sum of consecutive naturals, for example, 1499452 + ... + 1501531.

Almost surely, 2^3121022320 is an apocalyptic number.

It is an amenable number.

3121022320 is an abundant number, since it is smaller than the sum of its proper divisors (4693540016).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3121022320 is a wasteful number, since it uses less digits than its factorization.

3121022320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3001009 (or 3001003 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 3121022320 is about 55866.1106575355. The cubic root of 3121022320 is about 1461.3882960314.

Adding to 3121022320 its reverse (232201213), we get a palindrome (3353223533).

The spelling of 3121022320 in words is "three billion, one hundred twenty-one million, twenty-two thousand, three hundred twenty".