248265931 has 2 divisors, whose sum is σ = 248265932. Its totient is φ = 248265930.

The previous prime is 248265929. The next prime is 248265991. The reversal of 248265931 is 139562842.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 248265931 - 2¹ = 248265929 is a prime.

It is a super-2 number, since 2×248265931² = 123271944990593522, which contains 22 as substring.

Together with 248265929, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (248265911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 124132965 + 124132966.

It is an arithmetic number, because the mean of its divisors is an integer number (124132966).

Almost surely, 2^248265931 is an apocalyptic number.

248265931 is a deficient number, since it is larger than the sum of its proper divisors (1).

248265931 is an equidigital number, since it uses as much as digits as its factorization.

248265931 is an evil number, because the sum of its binary digits is even.

The product of its digits is 103680, while the sum is 40.

The square root of 248265931 is about 15756.4568034822. The cubic root of 248265931 is about 628.5006175963.

The spelling of 248265931 in words is "two hundred forty-eight million, two hundred sixty-five thousand, nine hundred thirty-one".