30013120031831 has 2 divisors, whose sum is σ = 30013120031832. Its totient is φ = 30013120031830.

The previous prime is 30013120031801. The next prime is 30013120031833. The reversal of 30013120031831 is 13813002131003.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 30013120031831 - 2⁶ = 30013120031767 is a prime.

It is a super-2 number, since 2×30013120031831² (a number of 28 digits) contains 22 as substring.

Together with 30013120031833, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 30013120031831.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30013120031833) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15006560015915 + 15006560015916.

It is an arithmetic number, because the mean of its divisors is an integer number (15006560015916).

Almost surely, 2^{30013120031831} is an apocalyptic number.

30013120031831 is a deficient number, since it is larger than the sum of its proper divisors (1).

30013120031831 is an equidigital number, since it uses as much as digits as its factorization.

30013120031831 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296, while the sum is 26.

Adding to 30013120031831 its reverse (13813002131003), we get a palindrome (43826122162834).

The spelling of 30013120031831 in words is "thirty trillion, thirteen billion, one hundred twenty million, thirty-one thousand, eight hundred thirty-one".