63126431 has 2 divisors, whose sum is σ = 63126432. Its totient is φ = 63126430.

The previous prime is 63126407. The next prime is 63126461. The reversal of 63126431 is 13462136.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 63126431 - 2⁶ = 63126367 is a prime.

It is a super-2 number, since 2×63126431² = 7969892581595522, 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 63126431.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (63126461) 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, 31563215 + 31563216.

It is an arithmetic number, because the mean of its divisors is an integer number (31563216).

Almost surely, 2^63126431 is an apocalyptic number.

63126431 is a deficient number, since it is larger than the sum of its proper divisors (1).

63126431 is an equidigital number, since it uses as much as digits as its factorization.

63126431 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2592, while the sum is 26.

The square root of 63126431 is about 7945.2143457556. The cubic root of 63126431 is about 398.1717208030.

Adding to 63126431 its reverse (13462136), we get a palindrome (76588567).

The spelling of 63126431 in words is "sixty-three million, one hundred twenty-six thousand, four hundred thirty-one".