31000011110203 has 2 divisors, whose sum is σ = 31000011110204. Its totient is φ = 31000011110202.

The previous prime is 31000011110143. The next prime is 31000011110221. The reversal of 31000011110203 is 30201111000013.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31000011110203 is a prime.

It is a super-2 number, since 2×31000011110203² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (31000011110293) 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, 15500005555101 + 15500005555102.

It is an arithmetic number, because the mean of its divisors is an integer number (15500005555102).

Almost surely, 2^{31000011110203} is an apocalyptic number.

31000011110203 is a deficient number, since it is larger than the sum of its proper divisors (1).

31000011110203 is an equidigital number, since it uses as much as digits as its factorization.

31000011110203 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18, while the sum is 13.

Adding to 31000011110203 its reverse (30201111000013), we get a palindrome (61201122110216).

The spelling of 31000011110203 in words is "thirty-one trillion, eleven million, one hundred ten thousand, two hundred three".