31304107 has 2 divisors, whose sum is σ = 31304108. Its totient is φ = 31304106.

The previous prime is 31304029. The next prime is 31304159. The reversal of 31304107 is 70140313.

It is a strong prime.

It is an emirp because it is prime and its reverse (70140313) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31304107 is a prime.

It is not a weakly prime, because it can be changed into another prime (31304807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15652053 + 15652054.

It is an arithmetic number, because the mean of its divisors is an integer number (15652054).

Almost surely, 2^31304107 is an apocalyptic number.

31304107 is a deficient number, since it is larger than the sum of its proper divisors (1).

31304107 is an equidigital number, since it uses as much as digits as its factorization.

31304107 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 252, while the sum is 19.

The square root of 31304107 is about 5595.0073279666. The cubic root of 31304107 is about 315.1619457857.

The spelling of 31304107 in words is "thirty-one million, three hundred four thousand, one hundred seven".