312697 has 16 divisors (see below), whose sum is σ = 405504. Its totient is φ = 234000.

The previous prime is 312679. The next prime is 312701. The reversal of 312697 is 796213.

312697 is nontrivially palindromic in base 6.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-312697 is a prime.

It is not an unprimeable number, because it can be changed into a prime (312617) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2322 + ... + 2452.

It is an arithmetic number, because the mean of its divisors is an integer number (25344).

2³¹²⁶⁹⁷ is an apocalyptic number.

It is an amenable number.

312697 is a deficient number, since it is larger than the sum of its proper divisors (92807).

312697 is a wasteful number, since it uses less digits than its factorization.

312697 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180.

The product of its digits is 2268, while the sum is 28.

The square root of 312697 is about 559.1931687709. The cubic root of 312697 is about 67.8746971600.

It can be divided in two parts, 3126 and 97, that added together give a palindrome (3223).

The spelling of 312697 in words is "three hundred twelve thousand, six hundred ninety-seven".