63226531 has 2 divisors, whose sum is σ = 63226532. Its totient is φ = 63226530.

The previous prime is 63226529. The next prime is 63226543. The reversal of 63226531 is 13562236.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 63226531 - 2¹ = 63226529 is a prime.

It is a super-2 number, since 2×63226531² = 7995188444587922, which contains 22 as substring.

Together with 63226529, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 63226531.

It is not a weakly prime, because it can be changed into another prime (63226231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31613265 + 31613266.

It is an arithmetic number, because the mean of its divisors is an integer number (31613266).

Almost surely, 2^63226531 is an apocalyptic number.

63226531 is a deficient number, since it is larger than the sum of its proper divisors (1).

63226531 is an equidigital number, since it uses as much as digits as its factorization.

63226531 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6480, while the sum is 28.

The square root of 63226531 is about 7951.5112400097. The cubic root of 63226531 is about 398.3820708365.

Adding to 63226531 its reverse (13562236), we get a palindrome (76788767).

The spelling of 63226531 in words is "sixty-three million, two hundred twenty-six thousand, five hundred thirty-one".