3121023120 has 40 divisors (see below), whose sum is σ = 9675172416. Its totient is φ = 832272768.

The previous prime is 3121023097. The next prime is 3121023121. The reversal of 3121023120 is 213201213.

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 (15).

It is a self number, because there is not a number n which added to its sum of digits gives 3121023120.

It is not an unprimeable number, because it can be changed into a prime (3121023121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6501892 + ... + 6502371.

Almost surely, 2^3121023120 is an apocalyptic number.

3121023120 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3121023120 is an abundant number, since it is smaller than the sum of its proper divisors (6554149296).

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

3121023120 is a wasteful number, since it uses less digits than its factorization.

3121023120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13004279 (or 13004273 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 3121023120 is about 55866.1178175108. The cubic root of 3121023120 is about 1461.3884208955.

Adding to 3121023120 its reverse (213201213), we get a palindrome (3334224333).

The spelling of 3121023120 in words is "three billion, one hundred twenty-one million, twenty-three thousand, one hundred twenty".