31113050503 has 2 divisors, whose sum is σ = 31113050504. Its totient is φ = 31113050502.

The previous prime is 31113050477. The next prime is 31113050543. The reversal of 31113050503 is 30505031113.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31113050503 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31113050543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15556525251 + 15556525252.

It is an arithmetic number, because the mean of its divisors is an integer number (15556525252).

Almost surely, 2^31113050503 is an apocalyptic number.

31113050503 is a deficient number, since it is larger than the sum of its proper divisors (1).

31113050503 is an equidigital number, since it uses as much as digits as its factorization.

31113050503 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 675, while the sum is 22.

Adding to 31113050503 its reverse (30505031113), we get a palindrome (61618081616).

The spelling of 31113050503 in words is "thirty-one billion, one hundred thirteen million, fifty thousand, five hundred three".