31212230407 has 2 divisors, whose sum is σ = 31212230408. Its totient is φ = 31212230406.

The previous prime is 31212230377. The next prime is 31212230417. The reversal of 31212230407 is 70403221213.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31212230407 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31212230417) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15606115203 + 15606115204.

It is an arithmetic number, because the mean of its divisors is an integer number (15606115204).

Almost surely, 2^31212230407 is an apocalyptic number.

31212230407 is a deficient number, since it is larger than the sum of its proper divisors (1).

31212230407 is an equidigital number, since it uses as much as digits as its factorization.

31212230407 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2016, while the sum is 25.

The spelling of 31212230407 in words is "thirty-one billion, two hundred twelve million, two hundred thirty thousand, four hundred seven".