3123220001509 has 2 divisors, whose sum is σ = 3123220001510. Its totient is φ = 3123220001508.

The previous prime is 3123220001497. The next prime is 3123220001527. The reversal of 3123220001509 is 9051000223213.

3123220001509 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1780583328225 + 1342636673284 = 1334385^2 + 1158722^2 .

It is a cyclic number.

It is not a de Polignac number, because 3123220001509 - 2⁷ = 3123220001381 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3123220001309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1561610000754 + 1561610000755.

It is an arithmetic number, because the mean of its divisors is an integer number (1561610000755).

Almost surely, 2^{3123220001509} is an apocalyptic number.

It is an amenable number.

3123220001509 is a deficient number, since it is larger than the sum of its proper divisors (1).

3123220001509 is an equidigital number, since it uses as much as digits as its factorization.

3123220001509 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3240, while the sum is 28.

The spelling of 3123220001509 in words is "three trillion, one hundred twenty-three billion, two hundred twenty million, one thousand, five hundred nine".