312738471 has 6 divisors (see below), whose sum is σ = 451733360. Its totient is φ = 208492308.

The previous prime is 312738421. The next prime is 312738473. The reversal of 312738471 is 174837213.

312738471 is nontrivially palindromic in base 11.

It is not a de Polignac number, because 312738471 - 2⁷ = 312738343 is a prime.

It is a super-3 number, since 3×312738471³ (a number of 26 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312738473) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 17374351 + ... + 17374368.

Almost surely, 2^312738471 is an apocalyptic number.

312738471 is a deficient number, since it is larger than the sum of its proper divisors (138994889).

312738471 is a wasteful number, since it uses less digits than its factorization.

312738471 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34748725 (or 34748722 counting only the distinct ones).

The product of its digits is 28224, while the sum is 36.

The square root of 312738471 is about 17684.4132218177. The cubic root of 312738471 is about 678.7769762281.

The spelling of 312738471 in words is "three hundred twelve million, seven hundred thirty-eight thousand, four hundred seventy-one".