251305432141 has 2 divisors, whose sum is σ = 251305432142. Its totient is φ = 251305432140.

The previous prime is 251305432127. The next prime is 251305432171. The reversal of 251305432141 is 141234503152.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 247635616900 + 3669815241 = 497630^2 + 60579^2 .

It is a cyclic number.

It is not a de Polignac number, because 251305432141 - 2¹¹ = 251305430093 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (251305432171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 125652716070 + 125652716071.

It is an arithmetic number, because the mean of its divisors is an integer number (125652716071).

Almost surely, 2^251305432141 is an apocalyptic number.

It is an amenable number.

251305432141 is a deficient number, since it is larger than the sum of its proper divisors (1).

251305432141 is an equidigital number, since it uses as much as digits as its factorization.

251305432141 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 31.

Adding to 251305432141 its reverse (141234503152), we get a palindrome (392539935293).

The spelling of 251305432141 in words is "two hundred fifty-one billion, three hundred five million, four hundred thirty-two thousand, one hundred forty-one".