312045 has 16 divisors (see below), whose sum is σ = 508032. Its totient is φ = 163520.

The previous prime is 312043. The next prime is 312047. The reversal of 312045 is 540213.

It is an interprime number because it is at equal distance from previous prime (312043) and next prime (312047).

It is not a de Polignac number, because 312045 - 2¹ = 312043 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312043) 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, 919 + ... + 1211.

It is an arithmetic number, because the mean of its divisors is an integer number (31752).

2³¹²⁰⁴⁵ is an apocalyptic number.

It is an amenable number.

312045 is a deficient number, since it is larger than the sum of its proper divisors (195987).

312045 is a wasteful number, since it uses less digits than its factorization.

312045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 372.

The product of its (nonzero) digits is 120, while the sum is 15.

The square root of 312045 is about 558.6098817601. The cubic root of 312045 is about 67.8274894838.

Adding to 312045 its reverse (540213), we get a palindrome (852258).

The spelling of 312045 in words is "three hundred twelve thousand, forty-five".