31213212222107 has 2 divisors, whose sum is σ = 31213212222108. Its totient is φ = 31213212222106.

The previous prime is 31213212222103. The next prime is 31213212222119. The reversal of 31213212222107 is 70122221231213.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 31213212222107 - 2² = 31213212222103 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 31213212222107.

It is not a weakly prime, because it can be changed into another prime (31213212222103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15606606111053 + 15606606111054.

It is an arithmetic number, because the mean of its divisors is an integer number (15606606111054).

Almost surely, 2^{31213212222107} is an apocalyptic number.

31213212222107 is a deficient number, since it is larger than the sum of its proper divisors (1).

31213212222107 is an equidigital number, since it uses as much as digits as its factorization.

31213212222107 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4032, while the sum is 29.

The spelling of 31213212222107 in words is "thirty-one trillion, two hundred thirteen billion, two hundred twelve million, two hundred twenty-two thousand, one hundred seven".