31211002032103 has 2 divisors, whose sum is σ = 31211002032104. Its totient is φ = 31211002032102.

The previous prime is 31211002032083. The next prime is 31211002032109. The reversal of 31211002032103 is 30123020011213.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31211002032103 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31211002032109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15605501016051 + 15605501016052.

It is an arithmetic number, because the mean of its divisors is an integer number (15605501016052).

Almost surely, 2^{31211002032103} is an apocalyptic number.

31211002032103 is a deficient number, since it is larger than the sum of its proper divisors (1).

31211002032103 is an equidigital number, since it uses as much as digits as its factorization.

31211002032103 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 31211002032103 its reverse (30123020011213), we get a palindrome (61334022043316).

The spelling of 31211002032103 in words is "thirty-one trillion, two hundred eleven billion, two million, thirty-two thousand, one hundred three".