134430251 has 2 divisors, whose sum is σ = 134430252. Its totient is φ = 134430250.

The previous prime is 134430227. The next prime is 134430259. The reversal of 134430251 is 152034431.

It is a strong prime.

It is an emirp because it is prime and its reverse (152034431) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-134430251 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (134430259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67215125 + 67215126.

It is an arithmetic number, because the mean of its divisors is an integer number (67215126).

Almost surely, 2^134430251 is an apocalyptic number.

134430251 is a deficient number, since it is larger than the sum of its proper divisors (1).

134430251 is an equidigital number, since it uses as much as digits as its factorization.

134430251 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 134430251 is about 11594.4060218711. The cubic root of 134430251 is about 512.2700944615.

Adding to 134430251 its reverse (152034431), we get a palindrome (286464682).

The spelling of 134430251 in words is "one hundred thirty-four million, four hundred thirty thousand, two hundred fifty-one".