312140378 has 16 divisors (see below), whose sum is σ = 512771904. Its totient is φ = 141327360.

The previous prime is 312140377. The next prime is 312140401. The reversal of 312140378 is 873041213.

It is a self number, because there is not a number n which added to its sum of digits gives 312140378.

It is not an unprimeable number, because it can be changed into a prime (312140377) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21950 + ... + 33257.

It is an arithmetic number, because the mean of its divisors is an integer number (32048244).

Almost surely, 2^312140378 is an apocalyptic number.

312140378 is a deficient number, since it is larger than the sum of its proper divisors (200631526).

312140378 is a wasteful number, since it uses less digits than its factorization.

312140378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55477.

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 312140378 is about 17667.4949554259. The cubic root of 312140378 is about 678.3439937527.

The spelling of 312140378 in words is "three hundred twelve million, one hundred forty thousand, three hundred seventy-eight".