321012030310009 has 2 divisors, whose sum is σ = 321012030310010. Its totient is φ = 321012030310008.

The previous prime is 321012030309911. The next prime is 321012030310057. The reversal of 321012030310009 is 900013030210123.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 223613981097984 + 97398049212025 = 14953728^2 + 9869045^2 .

It is an emirp because it is prime and its reverse (900013030210123) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 321012030310009 - 2⁴³ = 312215937287801 is a prime.

It is not a weakly prime, because it can be changed into another prime (321012030310709) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160506015155004 + 160506015155005.

It is an arithmetic number, because the mean of its divisors is an integer number (160506015155005).

Almost surely, 2^{321012030310009} is an apocalyptic number.

It is an amenable number.

321012030310009 is a deficient number, since it is larger than the sum of its proper divisors (1).

321012030310009 is an equidigital number, since it uses as much as digits as its factorization.

321012030310009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 972, while the sum is 25.

The spelling of 321012030310009 in words is "three hundred twenty-one trillion, twelve billion, thirty million, three hundred ten thousand, nine".