313780105 has 4 divisors (see below), whose sum is σ = 376536132. Its totient is φ = 251024080.

The previous prime is 313780081. The next prime is 313780121. The reversal of 313780105 is 501087313.

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 47045881 + 266734224 = 6859^2 + 16332^2 .

It is not a de Polignac number, because 313780105 - 2²¹ = 311682953 is a prime.

It is a super-2 number, since 2×313780105² = 196915908587622050, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31378006 + ... + 31378015.

It is an arithmetic number, because the mean of its divisors is an integer number (94134033).

Almost surely, 2^313780105 is an apocalyptic number.

It is an amenable number.

313780105 is a deficient number, since it is larger than the sum of its proper divisors (62756027).

313780105 is an equidigital number, since it uses as much as digits as its factorization.

313780105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62756026.

The product of its (nonzero) digits is 2520, while the sum is 28.

The square root of 313780105 is about 17713.8393636162. The cubic root of 313780105 is about 679.5297390192.

The spelling of 313780105 in words is "three hundred thirteen million, seven hundred eighty thousand, one hundred five".