245305031 has 2 divisors, whose sum is σ = 245305032. Its totient is φ = 245305030.

The previous prime is 245305007. The next prime is 245305037. The reversal of 245305031 is 130503542.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 245305031 - 2¹⁸ = 245042887 is a prime.

It is a super-2 number, since 2×245305031² = 120349116467821922, 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 = 245304988 and 245305006.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (245305037) 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, 122652515 + 122652516.

It is an arithmetic number, because the mean of its divisors is an integer number (122652516).

Almost surely, 2^245305031 is an apocalyptic number.

245305031 is a deficient number, since it is larger than the sum of its proper divisors (1).

245305031 is an equidigital number, since it uses as much as digits as its factorization.

245305031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1800, while the sum is 23.

The square root of 245305031 is about 15662.2166694245. The cubic root of 245305031 is about 625.9920509560.

Adding to 245305031 its reverse (130503542), we get a palindrome (375808573).

The spelling of 245305031 in words is "two hundred forty-five million, three hundred five thousand, thirty-one".