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213379253 = 1911230487
BaseRepresentation
bin11001011011111…
…10100010110101
3112212111210022022
430231332202311
5414111114003
633101242525
75200456643
oct1455764265
9485453268
10213379253
11aa4a0a9a
125b563445
1335290019
14204a6193
1513aed738
hexcb7e8b5

213379253 has 4 divisors (see below), whose sum is σ = 224609760. Its totient is φ = 202148748.

The previous prime is 213379217. The next prime is 213379273. The reversal of 213379253 is 352973312.

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.

It is a cyclic number.

It is not a de Polignac number, because 213379253 - 212 = 213375157 is a prime.

It is a super-2 number, since 2×2133792532 = 91061411221676018, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213379213) 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, 5615225 + ... + 5615262.

It is an arithmetic number, because the mean of its divisors is an integer number (56152440).

Almost surely, 2213379253 is an apocalyptic number.

It is an amenable number.

213379253 is a deficient number, since it is larger than the sum of its proper divisors (11230507).

213379253 is a wasteful number, since it uses less digits than its factorization.

213379253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11230506.

The product of its digits is 34020, while the sum is 35.

The square root of 213379253 is about 14607.5067345526. The cubic root of 213379253 is about 597.5635015928.

The spelling of 213379253 in words is "two hundred thirteen million, three hundred seventy-nine thousand, two hundred fifty-three".

Divisors: 1 19 11230487 213379253