312621473 has 8 divisors (see below), whose sum is σ = 321334080. Its totient is φ = 303922800.

The previous prime is 312621461. The next prime is 312621499. The reversal of 312621473 is 374126213.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 312621473 - 2⁴ = 312621457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (312621443) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55748 + ... + 61098.

It is an arithmetic number, because the mean of its divisors is an integer number (40166760).

Almost surely, 2^312621473 is an apocalyptic number.

It is an amenable number.

312621473 is a deficient number, since it is larger than the sum of its proper divisors (8712607).

312621473 is a wasteful number, since it uses less digits than its factorization.

312621473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6967.

The product of its digits is 6048, while the sum is 29.

The square root of 312621473 is about 17681.1049711267. The cubic root of 312621473 is about 678.6923203453.

Adding to 312621473 its reverse (374126213), we get a palindrome (686747686).

The spelling of 312621473 in words is "three hundred twelve million, six hundred twenty-one thousand, four hundred seventy-three".