313785 has 24 divisors (see below), whose sum is σ = 574080. Its totient is φ = 158112.

The previous prime is 313783. The next prime is 313829. The reversal of 313785 is 587313.

It is not a de Polignac number, because 313785 - 2¹ = 313783 is a prime.

It is a super-2 number, since 2×313785² = 196922052450, which contains 22 as substring.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 313785.

It is not an unprimeable number, because it can be changed into a prime (313783) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 672 + ... + 1038.

It is an arithmetic number, because the mean of its divisors is an integer number (23920).

2³¹³⁷⁸⁵ is an apocalyptic number.

It is an amenable number.

313785 is a deficient number, since it is larger than the sum of its proper divisors (260295).

313785 is a wasteful number, since it uses less digits than its factorization.

313785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 397 (or 394 counting only the distinct ones).

The product of its digits is 2520, while the sum is 27.

The square root of 313785 is about 560.1651542179. The cubic root of 313785 is about 67.9533272577.

The spelling of 313785 in words is "three hundred thirteen thousand, seven hundred eighty-five".