30140133281 has 2 divisors, whose sum is σ = 30140133282. Its totient is φ = 30140133280.

The previous prime is 30140133211. The next prime is 30140133311. The reversal of 30140133281 is 18233104103.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 30140084881 + 48400 = 173609^2 + 220^2 .

It is an emirp because it is prime and its reverse (18233104103) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30140133281 is a prime.

It is a super-2 number, since 2×30140133281² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 30140133281.

It is not a weakly prime, because it can be changed into another prime (30140133211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15070066640 + 15070066641.

It is an arithmetic number, because the mean of its divisors is an integer number (15070066641).

Almost surely, 2^30140133281 is an apocalyptic number.

It is an amenable number.

30140133281 is a deficient number, since it is larger than the sum of its proper divisors (1).

30140133281 is an equidigital number, since it uses as much as digits as its factorization.

30140133281 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 26.

Adding to 30140133281 its reverse (18233104103), we get a palindrome (48373237384).

The spelling of 30140133281 in words is "thirty billion, one hundred forty million, one hundred thirty-three thousand, two hundred eighty-one".