3121672540 has 24 divisors (see below), whose sum is σ = 7492014432. Its totient is φ = 1070287680.

The previous prime is 3121672529. The next prime is 3121672553. The reversal of 3121672540 is 452761213.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11148691 + ... + 11148970.

It is an arithmetic number, because the mean of its divisors is an integer number (312167268).

Almost surely, 2^3121672540 is an apocalyptic number.

It is an amenable number.

3121672540 is an abundant number, since it is smaller than the sum of its proper divisors (4370341892).

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

3121672540 is a wasteful number, since it uses less digits than its factorization.

3121672540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22297677 (or 22297675 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 31.

The square root of 3121672540 is about 55871.9298037932. The cubic root of 3121672540 is about 1461.4897753780.

The spelling of 3121672540 in words is "three billion, one hundred twenty-one million, six hundred seventy-two thousand, five hundred forty".