312140 has 12 divisors (see below), whose sum is σ = 655536. Its totient is φ = 124848.

The previous prime is 312121. The next prime is 312161. The reversal of 312140 is 41213.

It is a happy number.

312140 is nontrivially palindromic in base 13.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 312140.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7784 + ... + 7823.

It is an arithmetic number, because the mean of its divisors is an integer number (54628).

2³¹²¹⁴⁰ is an apocalyptic number.

It is an amenable number.

312140 is an abundant number, since it is smaller than the sum of its proper divisors (343396).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

312140 is a wasteful number, since it uses less digits than its factorization.

312140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15616 (or 15614 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 312140 is about 558.6949077985. The cubic root of 312140 is about 67.8343719929.

Adding to 312140 its reverse (41213), we get a palindrome (353353).

The spelling of 312140 in words is "three hundred twelve thousand, one hundred forty", and thus it is an iban number.