3121340736 has 56 divisors (see below), whose sum is σ = 8306373024. Its totient is φ = 1034421760.

The previous prime is 3121340723. The next prime is 3121340753. The reversal of 3121340736 is 6370431213.

It is a super-4 number, since 4×3121340736⁴ (a number of 39 digits) contains 4444 as substring.

It is a congruent number.

It is an unprimeable number.

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, 13770 + ... + 80201.

Almost surely, 2^3121340736 is an apocalyptic number.

It is an amenable number.

3121340736 is an abundant number, since it is smaller than the sum of its proper divisors (5185032288).

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

3121340736 is a wasteful number, since it uses less digits than its factorization.

3121340736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94159 (or 94149 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 30.

The square root of 3121340736 is about 55868.9603984180. The cubic root of 3121340736 is about 1461.4379927380.

Adding to 3121340736 its reverse (6370431213), we get a palindrome (9491771949).

The spelling of 3121340736 in words is "three billion, one hundred twenty-one million, three hundred forty thousand, seven hundred thirty-six".