63281623 has 2 divisors, whose sum is σ = 63281624. Its totient is φ = 63281622.

The previous prime is 63281591. The next prime is 63281627. The reversal of 63281623 is 32618236.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 63281623 - 2⁵ = 63281591 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (63281627) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31640811 + 31640812.

It is an arithmetic number, because the mean of its divisors is an integer number (31640812).

Almost surely, 2^63281623 is an apocalyptic number.

63281623 is a deficient number, since it is larger than the sum of its proper divisors (1).

63281623 is an equidigital number, since it uses as much as digits as its factorization.

63281623 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10368, while the sum is 31.

The square root of 63281623 is about 7954.9747328323. The cubic root of 63281623 is about 398.4977463983.

Adding to 63281623 its reverse (32618236), we get a palindrome (95899859).

The spelling of 63281623 in words is "sixty-three million, two hundred eighty-one thousand, six hundred twenty-three".