3121969057 has 2 divisors, whose sum is σ = 3121969058. Its totient is φ = 3121969056.

The previous prime is 3121969013. The next prime is 3121969061. The reversal of 3121969057 is 7509691213.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1673709921 + 1448259136 = 40911^2 + 38056^2 .

It is a cyclic number.

It is not a de Polignac number, because 3121969057 - 2¹⁹ = 3121444769 is a prime.

It is not a weakly prime, because it can be changed into another prime (3121969007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1560984528 + 1560984529.

It is an arithmetic number, because the mean of its divisors is an integer number (1560984529).

Almost surely, 2^3121969057 is an apocalyptic number.

It is an amenable number.

3121969057 is a deficient number, since it is larger than the sum of its proper divisors (1).

3121969057 is an equidigital number, since it uses as much as digits as its factorization.

3121969057 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 102060, while the sum is 43.

The square root of 3121969057 is about 55874.5832825624. The cubic root of 3121969057 is about 1461.5360478850.

The spelling of 3121969057 in words is "three billion, one hundred twenty-one million, nine hundred sixty-nine thousand, fifty-seven".