63361531 has 2 divisors, whose sum is σ = 63361532. Its totient is φ = 63361530.

The previous prime is 63361517. The next prime is 63361537. The reversal of 63361531 is 13516336.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 63361531 - 2⁹ = 63361019 is a prime.

It is a super-2 number, since 2×63361531² = 8029367221327922, 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 63361531.

It is not a weakly prime, because it can be changed into another prime (63361537) 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, 31680765 + 31680766.

It is an arithmetic number, because the mean of its divisors is an integer number (31680766).

Almost surely, 2^63361531 is an apocalyptic number.

63361531 is a deficient number, since it is larger than the sum of its proper divisors (1).

63361531 is an equidigital number, since it uses as much as digits as its factorization.

63361531 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4860, while the sum is 28.

The square root of 63361531 is about 7959.9956658280. The cubic root of 63361531 is about 398.6654083652.

Adding to 63361531 its reverse (13516336), we get a palindrome (76877867).

The spelling of 63361531 in words is "sixty-three million, three hundred sixty-one thousand, five hundred thirty-one".