31530840307 has 2 divisors, whose sum is σ = 31530840308. Its totient is φ = 31530840306.

The previous prime is 31530840293. The next prime is 31530840329. The reversal of 31530840307 is 70304803513.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31530840307 is a prime.

It is not a weakly prime, because it can be changed into another prime (31530840337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15765420153 + 15765420154.

It is an arithmetic number, because the mean of its divisors is an integer number (15765420154).

Almost surely, 2^31530840307 is an apocalyptic number.

31530840307 is a deficient number, since it is larger than the sum of its proper divisors (1).

31530840307 is an equidigital number, since it uses as much as digits as its factorization.

31530840307 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 30240, while the sum is 34.

The spelling of 31530840307 in words is "thirty-one billion, five hundred thirty million, eight hundred forty thousand, three hundred seven".