313384615949 has 4 divisors (see below), whose sum is σ = 313762644060. Its totient is φ = 313006587840.

The previous prime is 313384615919. The next prime is 313384615997. The reversal of 313384615949 is 949516483313.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 259444553449 + 53940062500 = 509357^2 + 232250^2 .

It is a cyclic number.

It is not a de Polignac number, because 313384615949 - 2²⁸ = 313116180493 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 313384615894 and 313384615903.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (313384615919) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 189012812 + ... + 189014469.

It is an arithmetic number, because the mean of its divisors is an integer number (78440661015).

Almost surely, 2^313384615949 is an apocalyptic number.

It is an amenable number.

313384615949 is a deficient number, since it is larger than the sum of its proper divisors (378028111).

313384615949 is an equidigital number, since it uses as much as digits as its factorization.

313384615949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 378028110.

The product of its digits is 8398080, while the sum is 56.

The spelling of 313384615949 in words is "three hundred thirteen billion, three hundred eighty-four million, six hundred fifteen thousand, nine hundred forty-nine".