251130231427 has 2 divisors, whose sum is σ = 251130231428. Its totient is φ = 251130231426.

The previous prime is 251130231397. The next prime is 251130231449. The reversal of 251130231427 is 724132031152.

251130231427 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-251130231427 is a prime.

It is not a weakly prime, because it can be changed into another prime (251130235427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 125565115713 + 125565115714.

It is an arithmetic number, because the mean of its divisors is an integer number (125565115714).

Almost surely, 2^251130231427 is an apocalyptic number.

251130231427 is a deficient number, since it is larger than the sum of its proper divisors (1).

251130231427 is an equidigital number, since it uses as much as digits as its factorization.

251130231427 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10080, while the sum is 31.

Adding to 251130231427 its reverse (724132031152), we get a palindrome (975262262579).

The spelling of 251130231427 in words is "two hundred fifty-one billion, one hundred thirty million, two hundred thirty-one thousand, four hundred twenty-seven".