31303211323207 has 2 divisors, whose sum is σ = 31303211323208. Its totient is φ = 31303211323206.

The previous prime is 31303211323127. The next prime is 31303211323211. The reversal of 31303211323207 is 70232311230313.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 31303211323207 - 2²³ = 31303202934599 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31303211323607) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15651605661603 + 15651605661604.

It is an arithmetic number, because the mean of its divisors is an integer number (15651605661604).

Almost surely, 2^{31303211323207} is an apocalyptic number.

31303211323207 is a deficient number, since it is larger than the sum of its proper divisors (1).

31303211323207 is an equidigital number, since it uses as much as digits as its factorization.

31303211323207 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13608, while the sum is 31.

The spelling of 31303211323207 in words is "thirty-one trillion, three hundred three billion, two hundred eleven million, three hundred twenty-three thousand, two hundred seven".