248440031 has 4 divisors (see below), whose sum is σ = 283931472. Its totient is φ = 212948592.

The previous prime is 248440021. The next prime is 248440079. The reversal of 248440031 is 130044842.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 248440031 - 2⁶ = 248439967 is a prime.

It is a super-2 number, since 2×248440031² = 123444898006561922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (248440001) 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 in 3 ways as a sum of consecutive naturals, for example, 17745710 + ... + 17745723.

It is an arithmetic number, because the mean of its divisors is an integer number (70982868).

Almost surely, 2^248440031 is an apocalyptic number.

248440031 is a deficient number, since it is larger than the sum of its proper divisors (35491441).

248440031 is an equidigital number, since it uses as much as digits as its factorization.

248440031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35491440.

The product of its (nonzero) digits is 3072, while the sum is 26.

The square root of 248440031 is about 15761.9805544862. The cubic root of 248440031 is about 628.6474982538.

Adding to 248440031 its reverse (130044842), we get a palindrome (378484873).

The spelling of 248440031 in words is "two hundred forty-eight million, four hundred forty thousand, thirty-one".