30203020311209 has 2 divisors, whose sum is σ = 30203020311210. Its totient is φ = 30203020311208.

The previous prime is 30203020311143. The next prime is 30203020311229. The reversal of 30203020311209 is 90211302030203.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23014471075600 + 7188549235609 = 4797340^2 + 2681147^2 .

It is an emirp because it is prime and its reverse (90211302030203) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 30203020311209 - 2¹² = 30203020307113 is a prime.

It is a super-2 number, since 2×30203020311209² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (30203020311229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15101510155604 + 15101510155605.

It is an arithmetic number, because the mean of its divisors is an integer number (15101510155605).

Almost surely, 2^{30203020311209} is an apocalyptic number.

It is an amenable number.

30203020311209 is a deficient number, since it is larger than the sum of its proper divisors (1).

30203020311209 is an equidigital number, since it uses as much as digits as its factorization.

30203020311209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1944, while the sum is 26.

The spelling of 30203020311209 in words is "thirty trillion, two hundred three billion, twenty million, three hundred eleven thousand, two hundred nine".