245244305431 has 2 divisors, whose sum is σ = 245244305432. Its totient is φ = 245244305430.

The previous prime is 245244305413. The next prime is 245244305441. The reversal of 245244305431 is 134503442542.

Together with previous prime (245244305413) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 245244305431 - 2¹¹ = 245244303383 is a prime.

It is a super-2 number, since 2×245244305431² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (245244305441) 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, 122622152715 + 122622152716.

It is an arithmetic number, because the mean of its divisors is an integer number (122622152716).

Almost surely, 2^245244305431 is an apocalyptic number.

245244305431 is a deficient number, since it is larger than the sum of its proper divisors (1).

245244305431 is an equidigital number, since it uses as much as digits as its factorization.

245244305431 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 230400, while the sum is 37.

Adding to 245244305431 its reverse (134503442542), we get a palindrome (379747747973).

The spelling of 245244305431 in words is "two hundred forty-five billion, two hundred forty-four million, three hundred five thousand, four hundred thirty-one".