245241631 has 2 divisors, whose sum is σ = 245241632. Its totient is φ = 245241630.

The previous prime is 245241551. The next prime is 245241637. The reversal of 245241631 is 136142542.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 245241631 - 2¹¹ = 245239583 is a prime.

It is a super-2 number, since 2×245241631² = 120286915151080322, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 245241631.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (245241637) 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, 122620815 + 122620816.

It is an arithmetic number, because the mean of its divisors is an integer number (122620816).

Almost surely, 2^245241631 is an apocalyptic number.

245241631 is a deficient number, since it is larger than the sum of its proper divisors (1).

245241631 is an equidigital number, since it uses as much as digits as its factorization.

245241631 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5760, while the sum is 28.

The square root of 245241631 is about 15660.1925594802. The cubic root of 245241631 is about 625.9381163159.

The spelling of 245241631 in words is "two hundred forty-five million, two hundred forty-one thousand, six hundred thirty-one".