63317431 has 2 divisors, whose sum is σ = 63317432. Its totient is φ = 63317430.

The previous prime is 63317393. The next prime is 63317453. The reversal of 63317431 is 13471336.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 63317431 - 2⁹ = 63316919 is a prime.

It is a super-2 number, since 2×63317431² = 8018194136879522, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 63317431.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (67317431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31658715 + 31658716.

It is an arithmetic number, because the mean of its divisors is an integer number (31658716).

Almost surely, 2^63317431 is an apocalyptic number.

63317431 is a deficient number, since it is larger than the sum of its proper divisors (1).

63317431 is an equidigital number, since it uses as much as digits as its factorization.

63317431 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4536, while the sum is 28.

The square root of 63317431 is about 7957.2250816475. The cubic root of 63317431 is about 398.5728957387.

Adding to 63317431 its reverse (13471336), we get a palindrome (76788767).

The spelling of 63317431 in words is "sixty-three million, three hundred seventeen thousand, four hundred thirty-one".