31302344320309 has 2 divisors, whose sum is σ = 31302344320310. Its totient is φ = 31302344320308.

The previous prime is 31302344320193. The next prime is 31302344320367. The reversal of 31302344320309 is 90302344320313.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 31130764455025 + 171579865284 = 5579495^2 + 414222^2 .

It is a cyclic number.

It is not a de Polignac number, because 31302344320309 - 2⁹ = 31302344319797 is a prime.

It is a super-2 number, since 2×31302344320309² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31302344320399) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15651172160154 + 15651172160155.

It is an arithmetic number, because the mean of its divisors is an integer number (15651172160155).

Almost surely, 2^{31302344320309} is an apocalyptic number.

It is an amenable number.

31302344320309 is a deficient number, since it is larger than the sum of its proper divisors (1).

31302344320309 is an equidigital number, since it uses as much as digits as its factorization.

31302344320309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 139968, while the sum is 37.

The spelling of 31302344320309 in words is "thirty-one trillion, three hundred two billion, three hundred forty-four million, three hundred twenty thousand, three hundred nine".