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352131213 = 3716768153
BaseRepresentation
bin10100111111010…
…001100010001101
3220112121010012210
4110333101202031
51210121144323
654535221033
711504031420
oct2477214215
9815533183
10352131213
11170850435
1299b17779
1357c51285
1434aa39b7
1520daa293
hex14fd188d

352131213 has 8 divisors (see below), whose sum is σ = 536580928. Its totient is φ = 201217824.

The previous prime is 352131181. The next prime is 352131271. The reversal of 352131213 is 312131253.

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

It is not a de Polignac number, because 352131213 - 25 = 352131181 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 16768153 = 352131213 / (3 + 5 + 2 + 1 + 3 + 1 + 2 + 1 + 3).

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 352131213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (352121213) 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, 8384056 + ... + 8384097.

It is an arithmetic number, because the mean of its divisors is an integer number (67072616).

Almost surely, 2352131213 is an apocalyptic number.

It is an amenable number.

352131213 is a deficient number, since it is larger than the sum of its proper divisors (184449715).

352131213 is a wasteful number, since it uses less digits than its factorization.

352131213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16768163.

The product of its digits is 540, while the sum is 21.

The square root of 352131213 is about 18765.1595516798. The cubic root of 352131213 is about 706.1573886656.

Adding to 352131213 its reverse (312131253), we get a palindrome (664262466).

The spelling of 352131213 in words is "three hundred fifty-two million, one hundred thirty-one thousand, two hundred thirteen".

Divisors: 1 3 7 21 16768153 50304459 117377071 352131213