251403130415323 has 2 divisors, whose sum is σ = 251403130415324. Its totient is φ = 251403130415322.

The previous prime is 251403130415303. The next prime is 251403130415357. The reversal of 251403130415323 is 323514031304152.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 251403130415323 - 2⁹ = 251403130414811 is a prime.

It is not a weakly prime, because it can be changed into another prime (251403130415303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 125701565207661 + 125701565207662.

It is an arithmetic number, because the mean of its divisors is an integer number (125701565207662).

Almost surely, 2^{251403130415323} is an apocalyptic number.

251403130415323 is a deficient number, since it is larger than the sum of its proper divisors (1).

251403130415323 is an equidigital number, since it uses as much as digits as its factorization.

251403130415323 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 129600, while the sum is 37.

Adding to 251403130415323 its reverse (323514031304152), we get a palindrome (574917161719475).

The spelling of 251403130415323 in words is "two hundred fifty-one trillion, four hundred three billion, one hundred thirty million, four hundred fifteen thousand, three hundred twenty-three".