312310140 has 24 divisors (see below), whose sum is σ = 874468560. Its totient is φ = 83282688.

The previous prime is 312310139. The next prime is 312310177. The reversal of 312310140 is 41013213.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2602525 + ... + 2602644.

It is an arithmetic number, because the mean of its divisors is an integer number (36436190).

Almost surely, 2^312310140 is an apocalyptic number.

312310140 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

312310140 is an abundant number, since it is smaller than the sum of its proper divisors (562158420).

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

312310140 is a wasteful number, since it uses less digits than its factorization.

312310140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5205181 (or 5205179 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 312310140 is about 17672.2986620304. The cubic root of 312310140 is about 678.4669471532.

Adding to 312310140 its reverse (41013213), we get a palindrome (353323353).

The spelling of 312310140 in words is "three hundred twelve million, three hundred ten thousand, one hundred forty".