3121444320 has 96 divisors (see below), whose sum is σ = 10098351648. Its totient is φ = 809883648.

The previous prime is 3121444309. The next prime is 3121444321. The reversal of 3121444320 is 234441213.

3121444320 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3121444321) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 70119 + ... + 105638.

It is an arithmetic number, because the mean of its divisors is an integer number (105191163).

Almost surely, 2^3121444320 is an apocalyptic number.

3121444320 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3121444320 is an abundant number, since it is smaller than the sum of its proper divisors (6976907328).

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

3121444320 is a wasteful number, since it uses less digits than its factorization.

3121444320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 175812 (or 175804 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

The square root of 3121444320 is about 55869.8874171051. The cubic root of 3121444320 is about 1461.4541588593.

Adding to 3121444320 its reverse (234441213), we get a palindrome (3355885533).

The spelling of 3121444320 in words is "three billion, one hundred twenty-one million, four hundred forty-four thousand, three hundred twenty".