3120872137 has 2 divisors, whose sum is σ = 3120872138. Its totient is φ = 3120872136.

The previous prime is 3120872107. The next prime is 3120872159. The reversal of 3120872137 is 7312780213.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3094029376 + 26842761 = 55624^2 + 5181^2 .

It is a cyclic number.

It is not a de Polignac number, because 3120872137 - 2⁷ = 3120872009 is a prime.

It is not a weakly prime, because it can be changed into another prime (3120872107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1560436068 + 1560436069.

It is an arithmetic number, because the mean of its divisors is an integer number (1560436069).

Almost surely, 2^3120872137 is an apocalyptic number.

It is an amenable number.

3120872137 is a deficient number, since it is larger than the sum of its proper divisors (1).

3120872137 is an equidigital number, since it uses as much as digits as its factorization.

3120872137 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14112, while the sum is 34.

The square root of 3120872137 is about 55864.7665080594. The cubic root of 3120872137 is about 1461.3648550799.

The spelling of 3120872137 in words is "three billion, one hundred twenty million, eight hundred seventy-two thousand, one hundred thirty-seven".