312145786 has 4 divisors (see below), whose sum is σ = 468218682. Its totient is φ = 156072892.

The previous prime is 312145783. The next prime is 312145787. The reversal of 312145786 is 687541213.

312145786 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 291760561 + 20385225 = 17081^2 + 4515^2 .

It is not an unprimeable number, because it can be changed into a prime (312145783) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78036445 + ... + 78036448.

Almost surely, 2^312145786 is an apocalyptic number.

312145786 is a deficient number, since it is larger than the sum of its proper divisors (156072896).

312145786 is a wasteful number, since it uses less digits than its factorization.

312145786 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156072895.

The product of its digits is 40320, while the sum is 37.

The square root of 312145786 is about 17667.6480041912. The cubic root of 312145786 is about 678.3479112883.

Adding to 312145786 its reverse (687541213), we get a palindrome (999686999).

The spelling of 312145786 in words is "three hundred twelve million, one hundred forty-five thousand, seven hundred eighty-six".