3121303124 has 12 divisors (see below), whose sum is σ = 5462735124. Its totient is φ = 1560521664.

The previous prime is 3121303123. The next prime is 3121303127. The reversal of 3121303124 is 4213031213.

It can be written as a sum of positive squares in 2 ways, for example, as 2871030724 + 250272400 = 53582^2 + 15820^2 .

It is a junction number, because it is equal to n+sod(n) for n = 3121303096 and 3121303105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3121303123) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39134 + ... + 88170.

It is an arithmetic number, because the mean of its divisors is an integer number (455227927).

Almost surely, 2^3121303124 is an apocalyptic number.

It is an amenable number.

3121303124 is a deficient number, since it is larger than the sum of its proper divisors (2341432000).

3121303124 is a wasteful number, since it uses less digits than its factorization.

3121303124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64954 (or 64952 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 3121303124 is about 55868.6237883125. The cubic root of 3121303124 is about 1461.4321226295.

Adding to 3121303124 its reverse (4213031213), we get a palindrome (7334334337).

The spelling of 3121303124 in words is "three billion, one hundred twenty-one million, three hundred three thousand, one hundred twenty-four".