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102230213 = 187354581
BaseRepresentation
bin1100001011111…
…10100011000101
321010100211111012
412011332203011
5202132331323
614051052005
72350641161
oct605764305
9233324435
10102230213
1152785088
122a2a1005
1318244967
14d811ca1
158e95678
hex617e8c5

102230213 has 4 divisors (see below), whose sum is σ = 102286668. Its totient is φ = 102173760.

The previous prime is 102230207. The next prime is 102230237. The reversal of 102230213 is 312032201.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 41499364 + 60730849 = 6442^2 + 7793^2 .

It is a cyclic number.

It is not a de Polignac number, because 102230213 - 28 = 102229957 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 (102230243) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25418 + ... + 29163.

It is an arithmetic number, because the mean of its divisors is an integer number (25571667).

Almost surely, 2102230213 is an apocalyptic number.

It is an amenable number.

102230213 is a deficient number, since it is larger than the sum of its proper divisors (56455).

102230213 is an equidigital number, since it uses as much as digits as its factorization.

102230213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56454.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 102230213 is about 10110.8957565589. The cubic root of 102230213 is about 467.5841220503.

Adding to 102230213 its reverse (312032201), we get a palindrome (414262414).

The spelling of 102230213 in words is "one hundred two million, two hundred thirty thousand, two hundred thirteen".

Divisors: 1 1873 54581 102230213