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316631253 = 3105543751
BaseRepresentation
bin10010110111110…
…110100011010101
3211001210112102110
4102313312203111
51122024200003
651230301233
710563215121
oct2267664325
9731715373
10316631253
11152803824
128a057819
13507a1a93
14300a2581
151cbe6a03
hex12df68d5

316631253 has 4 divisors (see below), whose sum is σ = 422175008. Its totient is φ = 211087500.

The previous prime is 316631243. The next prime is 316631261. The reversal of 316631253 is 352136613.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 352136613 = 3117378871.

It is not a de Polignac number, because 316631253 - 217 = 316500181 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 316631253.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (316631243) 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 3 ways as a sum of consecutive naturals, for example, 52771873 + ... + 52771878.

It is an arithmetic number, because the mean of its divisors is an integer number (105543752).

Almost surely, 2316631253 is an apocalyptic number.

It is an amenable number.

316631253 is a deficient number, since it is larger than the sum of its proper divisors (105543755).

316631253 is a wasteful number, since it uses less digits than its factorization.

316631253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105543754.

The product of its digits is 9720, while the sum is 30.

The square root of 316631253 is about 17794.1353540991. The cubic root of 316631253 is about 681.5817080236.

Adding to 316631253 its reverse (352136613), we get a palindrome (668767866).

The spelling of 316631253 in words is "three hundred sixteen million, six hundred thirty-one thousand, two hundred fifty-three".

Divisors: 1 3 105543751 316631253