31212131035103 has 2 divisors, whose sum is σ = 31212131035104. Its totient is φ = 31212131035102.

The previous prime is 31212131034923. The next prime is 31212131035117. The reversal of 31212131035103 is 30153013121213.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 31212131035103 - 2¹⁶ = 31212130969567 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31212131035703) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15606065517551 + 15606065517552.

It is an arithmetic number, because the mean of its divisors is an integer number (15606065517552).

Almost surely, 2^{31212131035103} is an apocalyptic number.

31212131035103 is a deficient number, since it is larger than the sum of its proper divisors (1).

31212131035103 is an equidigital number, since it uses as much as digits as its factorization.

31212131035103 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1620, while the sum is 26.

Adding to 31212131035103 its reverse (30153013121213), we get a palindrome (61365144156316).

The spelling of 31212131035103 in words is "thirty-one trillion, two hundred twelve billion, one hundred thirty-one million, thirty-five thousand, one hundred three".