248638031 has 2 divisors, whose sum is σ = 248638032. Its totient is φ = 248638030.

The previous prime is 248638007. The next prime is 248638069. The reversal of 248638031 is 130836842.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-248638031 is a prime.

It is a super-2 number, since 2×248638031² = 123641740919113922, which contains 22 as substring.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 248637982 and 248638000.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (248638001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 124319015 + 124319016.

It is an arithmetic number, because the mean of its divisors is an integer number (124319016).

Almost surely, 2^248638031 is an apocalyptic number.

248638031 is a deficient number, since it is larger than the sum of its proper divisors (1).

248638031 is an equidigital number, since it uses as much as digits as its factorization.

248638031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27648, while the sum is 35.

The square root of 248638031 is about 15768.2602401153. The cubic root of 248638031 is about 628.8144589375.

The spelling of 248638031 in words is "two hundred forty-eight million, six hundred thirty-eight thousand, thirty-one".