31304021230379 has 2 divisors, whose sum is σ = 31304021230380. Its totient is φ = 31304021230378.

The previous prime is 31304021230277. The next prime is 31304021230381. The reversal of 31304021230379 is 97303212040313.

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-31304021230379 is a prime.

It is a Sophie Germain prime.

Together with 31304021230381, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (31304021730379) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15652010615189 + 15652010615190.

It is an arithmetic number, because the mean of its divisors is an integer number (15652010615190).

Almost surely, 2^{31304021230379} is an apocalyptic number.

31304021230379 is a deficient number, since it is larger than the sum of its proper divisors (1).

31304021230379 is an equidigital number, since it uses as much as digits as its factorization.

31304021230379 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 81648, while the sum is 38.

The spelling of 31304021230379 in words is "thirty-one trillion, three hundred four billion, twenty-one million, two hundred thirty thousand, three hundred seventy-nine".