31213212222103 has 2 divisors, whose sum is σ = 31213212222104. Its totient is φ = 31213212222102.

The previous prime is 31213212222097. The next prime is 31213212222107. The reversal of 31213212222103 is 30122221231213.

It is a strong prime.

It is an emirp because it is prime and its reverse (30122221231213) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 31213212222103 - 2⁴¹ = 29014188966551 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31213212222107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15606606111051 + 15606606111052.

It is an arithmetic number, because the mean of its divisors is an integer number (15606606111052).

Almost surely, 2^{31213212222103} is an apocalyptic number.

31213212222103 is a deficient number, since it is larger than the sum of its proper divisors (1).

31213212222103 is an equidigital number, since it uses as much as digits as its factorization.

31213212222103 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 25.

Adding to 31213212222103 its reverse (30122221231213), we get a palindrome (61335433453316).

The spelling of 31213212222103 in words is "thirty-one trillion, two hundred thirteen billion, two hundred twelve million, two hundred twenty-two thousand, one hundred three".