3121203004009 has 2 divisors, whose sum is σ = 3121203004010. Its totient is φ = 3121203004008.

The previous prime is 3121203003973. The next prime is 3121203004033. The reversal of 3121203004009 is 9004003021213.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2243884161600 + 877318842409 = 1497960^2 + 936653^2 .

It is a cyclic number.

It is not a de Polignac number, because 3121203004009 - 2¹⁹ = 3121202479721 is a prime.

It is not a weakly prime, because it can be changed into another prime (3121203004109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1560601502004 + 1560601502005.

It is an arithmetic number, because the mean of its divisors is an integer number (1560601502005).

Almost surely, 2^{3121203004009} is an apocalyptic number.

It is an amenable number.

3121203004009 is a deficient number, since it is larger than the sum of its proper divisors (1).

3121203004009 is an equidigital number, since it uses as much as digits as its factorization.

3121203004009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296, while the sum is 25.

The spelling of 3121203004009 in words is "three trillion, one hundred twenty-one billion, two hundred three million, four thousand, nine".