31212230207 has 2 divisors, whose sum is σ = 31212230208. Its totient is φ = 31212230206.

The previous prime is 31212230191. The next prime is 31212230263. The reversal of 31212230207 is 70203221213.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 31212230207 - 2⁴ = 31212230191 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31212230407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15606115103 + 15606115104.

It is an arithmetic number, because the mean of its divisors is an integer number (15606115104).

Almost surely, 2^31212230207 is an apocalyptic number.

31212230207 is a deficient number, since it is larger than the sum of its proper divisors (1).

31212230207 is an equidigital number, since it uses as much as digits as its factorization.

31212230207 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1008, while the sum is 23.

The spelling of 31212230207 in words is "thirty-one billion, two hundred twelve million, two hundred thirty thousand, two hundred seven".