30031123013 has 2 divisors, whose sum is σ = 30031123014. Its totient is φ = 30031123012.

The previous prime is 30031122971. The next prime is 30031123021. The reversal of 30031123013 is 31032113003.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20885452324 + 9145670689 = 144518^2 + 95633^2 .

It is a cyclic number.

It is not a de Polignac number, because 30031123013 - 2⁸ = 30031122757 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 30031122982 and 30031123000.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30031123313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15015561506 + 15015561507.

It is an arithmetic number, because the mean of its divisors is an integer number (15015561507).

Almost surely, 2^30031123013 is an apocalyptic number.

It is an amenable number.

30031123013 is a deficient number, since it is larger than the sum of its proper divisors (1).

30031123013 is an equidigital number, since it uses as much as digits as its factorization.

30031123013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 162, while the sum is 17.

Adding to 30031123013 its reverse (31032113003), we get a palindrome (61063236016).

The spelling of 30031123013 in words is "thirty billion, thirty-one million, one hundred twenty-three thousand, thirteen".