31503145310011 has 2 divisors, whose sum is σ = 31503145310012. Its totient is φ = 31503145310010.

The previous prime is 31503145309967. The next prime is 31503145310017. The reversal of 31503145310011 is 11001354130513.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31503145310011 is a prime.

It is not a weakly prime, because it can be changed into another prime (31503145310017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15751572655005 + 15751572655006.

It is an arithmetic number, because the mean of its divisors is an integer number (15751572655006).

Almost surely, 2^{31503145310011} is an apocalyptic number.

31503145310011 is a deficient number, since it is larger than the sum of its proper divisors (1).

31503145310011 is an equidigital number, since it uses as much as digits as its factorization.

31503145310011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2700, while the sum is 28.

Adding to 31503145310011 its reverse (11001354130513), we get a palindrome (42504499440524).

The spelling of 31503145310011 in words is "thirty-one trillion, five hundred three billion, one hundred forty-five million, three hundred ten thousand, eleven".