318607421 has 8 divisors (see below), whose sum is σ = 368017344. Its totient is φ = 272605120.

The previous prime is 318607417. The next prime is 318607423. The reversal of 318607421 is 124706813.

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 318607421 - 2² = 318607417 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (318607423) 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, 851705 + ... + 852078.

It is an arithmetic number, because the mean of its divisors is an integer number (46002168).

Almost surely, 2^318607421 is an apocalyptic number.

It is an amenable number.

318607421 is a deficient number, since it is larger than the sum of its proper divisors (49409923).

318607421 is a wasteful number, since it uses less digits than its factorization.

318607421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1703811.

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 318607421 is about 17849.5776140501. The cubic root of 318607421 is about 682.9967373137.

The spelling of 318607421 in words is "three hundred eighteen million, six hundred seven thousand, four hundred twenty-one".