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230087149 is a prime number
BaseRepresentation
bin11011011011011…
…01100111101101
3121000221122020021
431231231213231
5432400242044
634455322141
75462465005
oct1555554755
9530848207
10230087149
11108972976
1265080351
133888cb56
14227b5005
15152ede84
hexdb6d9ed

230087149 has 2 divisors, whose sum is σ = 230087150. Its totient is φ = 230087148.

The previous prime is 230087071. The next prime is 230087219. The reversal of 230087149 is 941780032.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 189255049 + 40832100 = 13757^2 + 6390^2 .

It is a cyclic number.

It is not a de Polignac number, because 230087149 - 213 = 230078957 is a prime.

It is a super-2 number, since 2×2300871492 = 105880192269896402, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (230087749) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115043574 + 115043575.

It is an arithmetic number, because the mean of its divisors is an integer number (115043575).

Almost surely, 2230087149 is an apocalyptic number.

It is an amenable number.

230087149 is a deficient number, since it is larger than the sum of its proper divisors (1).

230087149 is an equidigital number, since it uses as much as digits as its factorization.

230087149 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12096, while the sum is 34.

The square root of 230087149 is about 15168.6238334267. The cubic root of 230087149 is about 612.7699425982.

The spelling of 230087149 in words is "two hundred thirty million, eighty-seven thousand, one hundred forty-nine".