31200213103 has 2 divisors, whose sum is σ = 31200213104. Its totient is φ = 31200213102.

The previous prime is 31200213073. The next prime is 31200213119. The reversal of 31200213103 is 30131200213.

It is an a-pointer prime, because the next prime (31200213119) can be obtained adding 31200213103 to its sum of digits (16).

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 31200213103 - 2⁵ = 31200213071 is a prime.

It is a super-2 number, since 2×31200213103² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31200214103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15600106551 + 15600106552.

It is an arithmetic number, because the mean of its divisors is an integer number (15600106552).

Almost surely, 2^31200213103 is an apocalyptic number.

31200213103 is a deficient number, since it is larger than the sum of its proper divisors (1).

31200213103 is an equidigital number, since it uses as much as digits as its factorization.

31200213103 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 31200213103 its reverse (30131200213), we get a palindrome (61331413316).

The spelling of 31200213103 in words is "thirty-one billion, two hundred million, two hundred thirteen thousand, one hundred three".