31663103 has 2 divisors, whose sum is σ = 31663104. Its totient is φ = 31663102.

The previous prime is 31663097. The next prime is 31663133. The reversal of 31663103 is 30136613.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 31663103 - 2⁸ = 31662847 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31663133) 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, 15831551 + 15831552.

It is an arithmetic number, because the mean of its divisors is an integer number (15831552).

Almost surely, 2^31663103 is an apocalyptic number.

31663103 is a deficient number, since it is larger than the sum of its proper divisors (1).

31663103 is an equidigital number, since it uses as much as digits as its factorization.

31663103 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 972, while the sum is 23.

The square root of 31663103 is about 5626.9976897099. The cubic root of 31663103 is about 316.3621302455.

Adding to 31663103 its reverse (30136613), we get a palindrome (61799716).

The spelling of 31663103 in words is "thirty-one million, six hundred sixty-three thousand, one hundred three".