312829 has 4 divisors (see below), whose sum is σ = 341280. Its totient is φ = 284380.

The previous prime is 312799. The next prime is 312839. The reversal of 312829 is 928213.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 312829 - 2⁷ = 312701 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 312829.

It is not an unprimeable number, because it can be changed into a prime (312839) 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, 14209 + ... + 14230.

It is an arithmetic number, because the mean of its divisors is an integer number (85320).

2³¹²⁸²⁹ is an apocalyptic number.

It is an amenable number.

312829 is a deficient number, since it is larger than the sum of its proper divisors (28451).

312829 is a wasteful number, since it uses less digits than its factorization.

312829 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28450.

The product of its digits is 864, while the sum is 25.

The square root of 312829 is about 559.3111835106. The cubic root of 312829 is about 67.8842465530.

The spelling of 312829 in words is "three hundred twelve thousand, eight hundred twenty-nine".