30121131102823 has 2 divisors, whose sum is σ = 30121131102824. Its totient is φ = 30121131102822.

The previous prime is 30121131102817. The next prime is 30121131102851. The reversal of 30121131102823 is 32820113112103.

It is an a-pointer prime, because the next prime (30121131102851) can be obtained adding 30121131102823 to its sum of digits (28).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 30121131102823 - 2⁵ = 30121131102791 is a prime.

It is a super-3 number, since 3×30121131102823³ (a number of 41 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 30121131102791 and 30121131102800.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30121131102863) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15060565551411 + 15060565551412.

It is an arithmetic number, because the mean of its divisors is an integer number (15060565551412).

Almost surely, 2^{30121131102823} is an apocalyptic number.

30121131102823 is a deficient number, since it is larger than the sum of its proper divisors (1).

30121131102823 is an equidigital number, since it uses as much as digits as its factorization.

30121131102823 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 28.

Adding to 30121131102823 its reverse (32820113112103), we get a palindrome (62941244214926).

The spelling of 30121131102823 in words is "thirty trillion, one hundred twenty-one billion, one hundred thirty-one million, one hundred two thousand, eight hundred twenty-three".