30534420251 has 2 divisors, whose sum is σ = 30534420252. Its totient is φ = 30534420250.

The previous prime is 30534420209. The next prime is 30534420263. The reversal of 30534420251 is 15202443503.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30534420251 is a prime.

It is not a weakly prime, because it can be changed into another prime (30534420551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15267210125 + 15267210126.

It is an arithmetic number, because the mean of its divisors is an integer number (15267210126).

Almost surely, 2^30534420251 is an apocalyptic number.

30534420251 is a deficient number, since it is larger than the sum of its proper divisors (1).

30534420251 is an equidigital number, since it uses as much as digits as its factorization.

30534420251 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14400, while the sum is 29.

Adding to 30534420251 its reverse (15202443503), we get a palindrome (45736863754).

The spelling of 30534420251 in words is "thirty billion, five hundred thirty-four million, four hundred twenty thousand, two hundred fifty-one".