312401273 has 4 divisors (see below), whose sum is σ = 313123188. Its totient is φ = 311679360.

The previous prime is 312401261. The next prime is 312401279. The reversal of 312401273 is 372104213.

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 29724304 + 282676969 = 5452^2 + 16813^2 .

It is a cyclic number.

It is not a de Polignac number, because 312401273 - 2⁶ = 312401209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (312401279) 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, 360308 + ... + 361173.

It is an arithmetic number, because the mean of its divisors is an integer number (78280797).

Almost surely, 2^312401273 is an apocalyptic number.

It is an amenable number.

312401273 is a deficient number, since it is larger than the sum of its proper divisors (721915).

312401273 is an equidigital number, since it uses as much as digits as its factorization.

312401273 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 721914.

The product of its (nonzero) digits is 1008, while the sum is 23.

The square root of 312401273 is about 17674.8768878315. The cubic root of 312401273 is about 678.5329336062.

Adding to 312401273 its reverse (372104213), we get a palindrome (684505486).

The spelling of 312401273 in words is "three hundred twelve million, four hundred one thousand, two hundred seventy-three".