313684021843 has 2 divisors, whose sum is σ = 313684021844. Its totient is φ = 313684021842.

The previous prime is 313684021831. The next prime is 313684021921. The reversal of 313684021843 is 348120486313.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 313684021843 - 2⁹ = 313684021331 is a prime.

It is a super-2 number, since 2×313684021843² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 313684021843.

It is not a weakly prime, because it can be changed into another prime (313684021243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156842010921 + 156842010922.

It is an arithmetic number, because the mean of its divisors is an integer number (156842010922).

Almost surely, 2^313684021843 is an apocalyptic number.

313684021843 is a deficient number, since it is larger than the sum of its proper divisors (1).

313684021843 is an equidigital number, since it uses as much as digits as its factorization.

313684021843 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 331776, while the sum is 43.

The spelling of 313684021843 in words is "three hundred thirteen billion, six hundred eighty-four million, twenty-one thousand, eight hundred forty-three".