313377785 has 12 divisors (see below), whose sum is σ = 437450148. Its totient is φ = 214887456.

The previous prime is 313377781. The next prime is 313377787. The reversal of 313377785 is 587773313.

It can be written as a sum of positive squares in 2 ways, for example, as 46676224 + 266701561 = 6832^2 + 16331^2 .

It is not a de Polignac number, because 313377785 - 2² = 313377781 is a prime.

It is a super-2 number, since 2×313377785² = 196411272263012450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (313377781) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 639302 + ... + 639791.

It is an arithmetic number, because the mean of its divisors is an integer number (36454179).

Almost surely, 2^313377785 is an apocalyptic number.

313377785 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

313377785 is a deficient number, since it is larger than the sum of its proper divisors (124072363).

313377785 is a wasteful number, since it uses less digits than its factorization.

313377785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1279112 (or 1279105 counting only the distinct ones).

The product of its digits is 370440, while the sum is 44.

The square root of 313377785 is about 17702.4796285718. The cubic root of 313377785 is about 679.2391901845.

The spelling of 313377785 in words is "three hundred thirteen million, three hundred seventy-seven thousand, seven hundred eighty-five".