312143425 has 24 divisors (see below), whose sum is σ = 425097792. Its totient is φ = 225480000.

The previous prime is 312143423. The next prime is 312143449. The reversal of 312143425 is 524341213.

It is not a de Polignac number, because 312143425 - 2¹ = 312143423 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 312143425.

It is not an unprimeable number, because it can be changed into a prime (312143423) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 37767 + ... + 45283.

It is an arithmetic number, because the mean of its divisors is an integer number (17712408).

Almost surely, 2^312143425 is an apocalyptic number.

It is an amenable number.

312143425 is a deficient number, since it is larger than the sum of its proper divisors (112954367).

312143425 is a wasteful number, since it uses less digits than its factorization.

312143425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7689 (or 7684 counting only the distinct ones).

The product of its digits is 2880, while the sum is 25.

The square root of 312143425 is about 17667.5811870216. The cubic root of 312143425 is about 678.3462009940.

Adding to 312143425 its reverse (524341213), we get a palindrome (836484638).

The spelling of 312143425 in words is "three hundred twelve million, one hundred forty-three thousand, four hundred twenty-five".