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320130253 = 3783104243
BaseRepresentation
bin10011000101001…
…100110011001101
3211022101022011001
4103011030303031
51123423132003
651433300301
710635030232
oct2305146315
9738338131
10320130253
11154783663
128b264691
13514285b1
1430733789
151d18861d
hex1314cccd

320130253 has 8 divisors (see below), whose sum is σ = 332746848. Its totient is φ = 307722384.

The previous prime is 320130203. The next prime is 320130263. The reversal of 320130253 is 352031023.

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 320130253 - 221 = 318033101 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 320130253.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320130203) 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, 49051 + ... + 55192.

It is an arithmetic number, because the mean of its divisors is an integer number (41593356).

Almost surely, 2320130253 is an apocalyptic number.

It is an amenable number.

320130253 is a deficient number, since it is larger than the sum of its proper divisors (12616595).

320130253 is a wasteful number, since it uses less digits than its factorization.

320130253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104363.

The product of its (nonzero) digits is 540, while the sum is 19.

The square root of 320130253 is about 17892.1841316257. The cubic root of 320130253 is about 684.0831700389.

Adding to 320130253 its reverse (352031023), we get a palindrome (672161276).

The spelling of 320130253 in words is "three hundred twenty million, one hundred thirty thousand, two hundred fifty-three".

Divisors: 1 37 83 3071 104243 3856991 8652169 320130253