316146021 has 8 divisors (see below), whose sum is σ = 421621440. Its totient is φ = 210717312.

The previous prime is 316146011. The next prime is 316146043. The reversal of 316146021 is 120641613.

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

It is not a de Polignac number, because 316146021 - 2¹¹ = 316143973 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 316145982 and 316146000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (316146001) 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 7 ways as a sum of consecutive naturals, for example, 9720 + ... + 26958.

It is an arithmetic number, because the mean of its divisors is an integer number (52702680).

Almost surely, 2^316146021 is an apocalyptic number.

It is an amenable number.

316146021 is a deficient number, since it is larger than the sum of its proper divisors (105475419).

316146021 is a wasteful number, since it uses less digits than its factorization.

316146021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23355.

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 316146021 is about 17780.4955217789. The cubic root of 316146021 is about 681.2333592322.

Adding to 316146021 its reverse (120641613), we get a palindrome (436787634).

The spelling of 316146021 in words is "three hundred sixteen million, one hundred forty-six thousand, twenty-one".