30123312019 has 2 divisors, whose sum is σ = 30123312020. Its totient is φ = 30123312018.

The previous prime is 30123312017. The next prime is 30123312047. The reversal of 30123312019 is 91021332103.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 30123312019 - 2¹ = 30123312017 is a prime.

It is a super-2 number, since 2×30123312019² (a number of 22 digits) contains 22 as substring.

Together with 30123312017, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 30123311984 and 30123312002.

It is not a weakly prime, because it can be changed into another prime (30123312017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15061656009 + 15061656010.

It is an arithmetic number, because the mean of its divisors is an integer number (15061656010).

Almost surely, 2^30123312019 is an apocalyptic number.

30123312019 is a deficient number, since it is larger than the sum of its proper divisors (1).

30123312019 is an equidigital number, since it uses as much as digits as its factorization.

30123312019 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 30123312019 in words is "thirty billion, one hundred twenty-three million, three hundred twelve thousand, nineteen".