312672805 has 4 divisors (see below), whose sum is σ = 375207372. Its totient is φ = 250138240.

The previous prime is 312672803. The next prime is 312672817. The reversal of 312672805 is 508276213.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 212051844 + 100620961 = 14562^2 + 10031^2 .

It is not a de Polignac number, because 312672805 - 2¹ = 312672803 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312672803) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31267276 + ... + 31267285.

It is an arithmetic number, because the mean of its divisors is an integer number (93801843).

Almost surely, 2^312672805 is an apocalyptic number.

It is an amenable number.

312672805 is a deficient number, since it is larger than the sum of its proper divisors (62534567).

312672805 is an equidigital number, since it uses as much as digits as its factorization.

312672805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62534566.

The product of its (nonzero) digits is 20160, while the sum is 34.

The square root of 312672805 is about 17682.5565176532. The cubic root of 312672805 is about 678.7294650827.

The spelling of 312672805 in words is "three hundred twelve million, six hundred seventy-two thousand, eight hundred five".