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230078957 is a prime number
BaseRepresentation
bin11011011011010…
…11100111101101
3121000221012222212
431231223213231
5432400011312
634455220205
75462432063
oct1555534755
9530835885
10230078957
111089677a9
1265077665
13388891c4
14227b2033
15152eb822
hexdb6b9ed

230078957 has 2 divisors, whose sum is σ = 230078958. Its totient is φ = 230078956.

The previous prime is 230078941. The next prime is 230078977. The reversal of 230078957 is 759870032.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 229492201 + 586756 = 15149^2 + 766^2 .

It is a cyclic number.

It is not a de Polignac number, because 230078957 - 24 = 230078941 is a prime.

It is a super-3 number, since 3×2300789573 (a number of 26 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (230078977) 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, 115039478 + 115039479.

It is an arithmetic number, because the mean of its divisors is an integer number (115039479).

Almost surely, 2230078957 is an apocalyptic number.

It is an amenable number.

230078957 is a deficient number, since it is larger than the sum of its proper divisors (1).

230078957 is an equidigital number, since it uses as much as digits as its factorization.

230078957 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 105840, while the sum is 41.

The square root of 230078957 is about 15168.3537999349. The cubic root of 230078957 is about 612.7626701785.

The spelling of 230078957 in words is "two hundred thirty million, seventy-eight thousand, nine hundred fifty-seven".