312140224 has 56 divisors (see below), whose sum is σ = 699058800. Its totient is φ = 136980480.

The previous prime is 312140167. The next prime is 312140237. The reversal of 312140224 is 422041213.

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, 12772 + ... + 28060.

Almost surely, 2^312140224 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 312140224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (349529400).

312140224 is an abundant number, since it is smaller than the sum of its proper divisors (386918576).

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

312140224 is a wasteful number, since it uses less digits than its factorization.

312140224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15341 (or 15331 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 312140224 is about 17667.4905971391. The cubic root of 312140224 is about 678.3438821950.

Adding to 312140224 its reverse (422041213), we get a palindrome (734181437).

The spelling of 312140224 in words is "three hundred twelve million, one hundred forty thousand, two hundred twenty-four".