312330140 has 24 divisors (see below), whose sum is σ = 656234880. Its totient is φ = 124867008.

The previous prime is 312330127. The next prime is 312330157. The reversal of 312330140 is 41033213.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59669 + ... + 64691.

It is an arithmetic number, because the mean of its divisors is an integer number (27343120).

Almost surely, 2^312330140 is an apocalyptic number.

It is an amenable number.

312330140 is an abundant number, since it is smaller than the sum of its proper divisors (343904740).

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

312330140 is a wasteful number, since it uses less digits than its factorization.

312330140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8141 (or 8139 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 312330140 is about 17672.8645103164. The cubic root of 312330140 is about 678.4814296047.

Adding to 312330140 its reverse (41033213), we get a palindrome (353363353).

The spelling of 312330140 in words is "three hundred twelve million, three hundred thirty thousand, one hundred forty".