316825380621 has 12 divisors (see below), whose sum is σ = 457641798172. Its totient is φ = 211214549376.

The previous prime is 316825380617. The next prime is 316825380623. The reversal of 316825380621 is 126083528613.

316825380621 is a `hidden beast` number, since 3 + 16 + 8 + 2 + 5 + 3 + 8 + 0 + 621 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 262016015625 + 54809364996 = 511875^2 + 234114^2 .

It is not a de Polignac number, because 316825380621 - 2² = 316825380617 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (316825380623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1090965 + ... + 1350501.

Almost surely, 2^316825380621 is an apocalyptic number.

It is an amenable number.

316825380621 is a deficient number, since it is larger than the sum of its proper divisors (140816417551).

316825380621 is a wasteful number, since it uses less digits than its factorization.

316825380621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 395180 (or 395177 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 45.

The spelling of 316825380621 in words is "three hundred sixteen billion, eight hundred twenty-five million, three hundred eighty thousand, six hundred twenty-one".