313140781939 has 2 divisors, whose sum is σ = 313140781940. Its totient is φ = 313140781938.

The previous prime is 313140781937. The next prime is 313140781951. The reversal of 313140781939 is 939187041313.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 313140781939 - 2¹ = 313140781937 is a prime.

Together with 313140781937, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 313140781892 and 313140781901.

It is not a weakly prime, because it can be changed into another prime (313140781931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156570390969 + 156570390970.

It is an arithmetic number, because the mean of its divisors is an integer number (156570390970).

Almost surely, 2^313140781939 is an apocalyptic number.

313140781939 is a deficient number, since it is larger than the sum of its proper divisors (1).

313140781939 is an equidigital number, since it uses as much as digits as its factorization.

313140781939 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 489888, while the sum is 49.

The spelling of 313140781939 in words is "three hundred thirteen billion, one hundred forty million, seven hundred eighty-one thousand, nine hundred thirty-nine".