248431529 has 2 divisors, whose sum is σ = 248431530. Its totient is φ = 248431528.

The previous prime is 248431507. The next prime is 248431531. The reversal of 248431529 is 925134842.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 247747600 + 683929 = 15740^2 + 827^2 .

It is a cyclic number.

It is not a de Polignac number, because 248431529 - 2⁸ = 248431273 is a prime.

Together with 248431531, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 248431492 and 248431501.

It is not a weakly prime, because it can be changed into another prime (248431549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 124215764 + 124215765.

It is an arithmetic number, because the mean of its divisors is an integer number (124215765).

Almost surely, 2^248431529 is an apocalyptic number.

It is an amenable number.

248431529 is a deficient number, since it is larger than the sum of its proper divisors (1).

248431529 is an equidigital number, since it uses as much as digits as its factorization.

248431529 is an evil number, because the sum of its binary digits is even.

The product of its digits is 69120, while the sum is 38.

The square root of 248431529 is about 15761.7108525693. The cubic root of 248431529 is about 628.6403270772.

The spelling of 248431529 in words is "two hundred forty-eight million, four hundred thirty-one thousand, five hundred twenty-nine".